| Date | CPI Value |
|---|---|
| Sep 1, 2023 | 307.79 |
| Aug 1, 2023 | 307.03 |
| Jul 1, 2023 | 305.69 |
| Jun 1, 2023 | 305.11 |
| May 1, 2023 | 304.13 |
| Apr 1, 2023 | 303.36 |
| Mar 1, 2023 | 301.84 |
| Feb 1, 2023 | 300.84 |
| Jan 1, 2023 | 299.17 |
| Dec 1, 2022 | 296.80 |
| Nov 1, 2022 | 297.71 |
| Oct 1, 2022 | 298.01 |
| Sep 1, 2022 | 296.81 |
| Aug 1, 2022 | 296.17 |
| Jul 1, 2022 | 296.28 |
| Jun 1, 2022 | 296.31 |
| May 1, 2022 | 292.30 |
| Apr 1, 2022 | 289.11 |
| Mar 1, 2022 | 287.50 |
| Feb 1, 2022 | 283.72 |
| Jan 1, 2022 | 281.15 |
| Dec 1, 2021 | 278.80 |
| Nov 1, 2021 | 277.95 |
| Oct 1, 2021 | 276.59 |
| Sep 1, 2021 | 274.31 |
| Aug 1, 2021 | 273.57 |
| Jul 1, 2021 | 273.00 |
| Jun 1, 2021 | 271.70 |
| May 1, 2021 | 269.20 |
| Apr 1, 2021 | 267.05 |
| Mar 1, 2021 | 264.88 |
| Feb 1, 2021 | 263.01 |
| Jan 1, 2021 | 261.58 |
| Dec 1, 2020 | 260.47 |
| Nov 1, 2020 | 260.23 |
| Oct 1, 2020 | 260.39 |
| Sep 1, 2020 | 260.28 |
| Aug 1, 2020 | 259.92 |
| Jul 1, 2020 | 259.10 |
| Jun 1, 2020 | 257.80 |
| May 1, 2020 | 256.39 |
| Apr 1, 2020 | 256.39 |
| Mar 1, 2020 | 258.11 |
| Feb 1, 2020 | 258.68 |
| Jan 1, 2020 | 257.97 |
| Dec 1, 2019 | 256.97 |
| Nov 1, 2019 | 257.21 |
| Oct 1, 2019 | 257.35 |
| Sep 1, 2019 | 256.76 |
| Aug 1, 2019 | 256.56 |
| Jul 1, 2019 | 256.57 |
| Jun 1, 2019 | 256.14 |
| May 1, 2019 | 256.09 |
| Apr 1, 2019 | 255.55 |
| Mar 1, 2019 | 254.20 |
| Feb 1, 2019 | 252.78 |
| Jan 1, 2019 | 251.71 |
| Dec 1, 2018 | 251.23 |
| Nov 1, 2018 | 252.04 |
| Oct 1, 2018 | 252.88 |
| Sep 1, 2018 | 252.44 |
| Aug 1, 2018 | 252.15 |
| Jul 1, 2018 | 252.01 |
| Jun 1, 2018 | 251.99 |
| May 1, 2018 | 251.59 |
| Apr 1, 2018 | 250.55 |
| Mar 1, 2018 | 249.55 |
| Feb 1, 2018 | 248.99 |
| Jan 1, 2018 | 247.87 |
| Dec 1, 2017 | 246.52 |
| Nov 1, 2017 | 246.67 |
| Oct 1, 2017 | 246.66 |
| Sep 1, 2017 | 246.82 |
| Aug 1, 2017 | 245.52 |
| Jul 1, 2017 | 244.79 |
| Jun 1, 2017 | 244.96 |
| May 1, 2017 | 244.73 |
| Apr 1, 2017 | 244.52 |
| Mar 1, 2017 | 243.80 |
| Feb 1, 2017 | 243.60 |
| Jan 1, 2017 | 242.84 |
| Dec 1, 2016 | 241.43 |
| Nov 1, 2016 | 241.35 |
| Oct 1, 2016 | 241.73 |
| Sep 1, 2016 | 241.43 |
| Aug 1, 2016 | 240.85 |
| Jul 1, 2016 | 240.63 |
| Jun 1, 2016 | 241.02 |
| May 1, 2016 | 240.23 |
| Apr 1, 2016 | 239.26 |
| Mar 1, 2016 | 238.13 |
| Feb 1, 2016 | 237.11 |
| Jan 1, 2016 | 236.92 |
| Dec 1, 2015 | 236.52 |
| Nov 1, 2015 | 237.34 |
| Oct 1, 2015 | 237.84 |
| Sep 1, 2015 | 237.95 |
| Aug 1, 2015 | 238.32 |
| Jul 1, 2015 | 238.65 |
| Jun 1, 2015 | 238.64 |
| May 1, 2015 | 237.80 |
| Apr 1, 2015 | 236.60 |
| Mar 1, 2015 | 236.12 |
| Feb 1, 2015 | 234.72 |
| Jan 1, 2015 | 233.71 |
| Dec 1, 2014 | 234.81 |
| Nov 1, 2014 | 236.15 |
| Oct 1, 2014 | 237.43 |
| Sep 1, 2014 | 238.03 |
| Aug 1, 2014 | 237.85 |
| Jul 1, 2014 | 238.25 |
| Jun 1, 2014 | 238.34 |
| May 1, 2014 | 237.90 |
| Apr 1, 2014 | 237.07 |
| Mar 1, 2014 | 236.29 |
| Feb 1, 2014 | 234.78 |
| Jan 1, 2014 | 233.92 |
| Dec 1, 2013 | 233.05 |
| Nov 1, 2013 | 233.07 |
| Oct 1, 2013 | 233.55 |
| Sep 1, 2013 | 234.15 |
| Aug 1, 2013 | 233.88 |
| Jul 1, 2013 | 233.60 |
| Jun 1, 2013 | 233.50 |
| May 1, 2013 | 232.95 |
| Apr 1, 2013 | 232.53 |
| Mar 1, 2013 | 232.77 |
| Feb 1, 2013 | 232.17 |
| Jan 1, 2013 | 230.28 |
| Dec 1, 2012 | 229.60 |
| Nov 1, 2012 | 230.22 |
| Oct 1, 2012 | 231.32 |
| Sep 1, 2012 | 231.41 |
| Aug 1, 2012 | 230.38 |
| Jul 1, 2012 | 229.10 |
| Jun 1, 2012 | 229.48 |
| May 1, 2012 | 229.82 |
| Apr 1, 2012 | 230.09 |
| Mar 1, 2012 | 229.39 |
| Feb 1, 2012 | 227.66 |
| Jan 1, 2012 | 226.66 |
| Dec 1, 2011 | 225.67 |
| Nov 1, 2011 | 226.23 |
| Oct 1, 2011 | 226.42 |
| Sep 1, 2011 | 226.89 |
| Aug 1, 2011 | 226.54 |
| Jul 1, 2011 | 225.92 |
| Jun 1, 2011 | 225.72 |
| May 1, 2011 | 225.96 |
| Apr 1, 2011 | 224.91 |
| Mar 1, 2011 | 223.47 |
| Feb 1, 2011 | 221.31 |
| Jan 1, 2011 | 220.22 |
| Dec 1, 2010 | 219.18 |
| Nov 1, 2010 | 218.80 |
| Oct 1, 2010 | 218.71 |
| Sep 1, 2010 | 218.44 |
| Aug 1, 2010 | 218.31 |
| Jul 1, 2010 | 218.01 |
| Jun 1, 2010 | 217.96 |
| May 1, 2010 | 218.18 |
| Apr 1, 2010 | 218.01 |
| Mar 1, 2010 | 217.63 |
| Feb 1, 2010 | 216.74 |
| Jan 1, 2010 | 216.69 |
| Dec 1, 2009 | 215.95 |
| Nov 1, 2009 | 216.33 |
| Oct 1, 2009 | 216.18 |
| Sep 1, 2009 | 215.97 |
| Aug 1, 2009 | 215.83 |
| Jul 1, 2009 | 215.35 |
| Jun 1, 2009 | 215.69 |
| May 1, 2009 | 213.86 |
| Apr 1, 2009 | 213.24 |
| Mar 1, 2009 | 212.71 |
| Feb 1, 2009 | 212.19 |
| Jan 1, 2009 | 211.14 |
| Dec 1, 2008 | 210.23 |
| Nov 1, 2008 | 212.43 |
| Oct 1, 2008 | 216.57 |
| Sep 1, 2008 | 218.78 |
| Aug 1, 2008 | 219.09 |
| Jul 1, 2008 | 219.96 |
| Jun 1, 2008 | 218.82 |
| May 1, 2008 | 216.63 |
| Apr 1, 2008 | 214.82 |
| Mar 1, 2008 | 213.53 |
| Feb 1, 2008 | 211.69 |
| Jan 1, 2008 | 211.08 |
| Dec 1, 2007 | 210.04 |
| Nov 1, 2007 | 210.18 |
| Oct 1, 2007 | 208.94 |
| Sep 1, 2007 | 208.49 |
| Aug 1, 2007 | 207.92 |
| Jul 1, 2007 | 208.30 |
| Jun 1, 2007 | 208.35 |
| May 1, 2007 | 207.95 |
| Apr 1, 2007 | 206.69 |
| Mar 1, 2007 | 205.35 |
| Feb 1, 2007 | 203.50 |
| Jan 1, 2007 | 202.42 |
| Dec 1, 2006 | 201.80 |
| Nov 1, 2006 | 201.50 |
| Oct 1, 2006 | 201.80 |
| Sep 1, 2006 | 202.90 |
| Aug 1, 2006 | 203.90 |
| Jul 1, 2006 | 203.50 |
| Jun 1, 2006 | 202.90 |
| May 1, 2006 | 202.50 |
| Apr 1, 2006 | 201.50 |
| Mar 1, 2006 | 199.80 |
| Feb 1, 2006 | 198.70 |
| Jan 1, 2006 | 198.30 |
| Dec 1, 2005 | 196.80 |
| Nov 1, 2005 | 197.60 |
| Oct 1, 2005 | 199.20 |
| Sep 1, 2005 | 198.80 |
| Aug 1, 2005 | 196.40 |
| Jul 1, 2005 | 195.40 |
| Jun 1, 2005 | 194.50 |
| May 1, 2005 | 194.40 |
| Apr 1, 2005 | 194.60 |
| Mar 1, 2005 | 193.30 |
| Feb 1, 2005 | 191.80 |
| Jan 1, 2005 | 190.70 |
| Dec 1, 2004 | 190.30 |
| Nov 1, 2004 | 191.00 |
| Oct 1, 2004 | 190.90 |
| Sep 1, 2004 | 189.90 |
| Aug 1, 2004 | 189.50 |
| Jul 1, 2004 | 189.40 |
| Jun 1, 2004 | 189.70 |
| May 1, 2004 | 189.10 |
| Apr 1, 2004 | 188.00 |
| Mar 1, 2004 | 187.40 |
| Feb 1, 2004 | 186.20 |
| Jan 1, 2004 | 185.20 |
| Dec 1, 2003 | 184.30 |
| Nov 1, 2003 | 184.50 |
| Oct 1, 2003 | 185.00 |
| Sep 1, 2003 | 185.20 |
| Aug 1, 2003 | 184.60 |
| Jul 1, 2003 | 183.90 |
| Jun 1, 2003 | 183.70 |
| May 1, 2003 | 183.50 |
| Apr 1, 2003 | 183.80 |
| Mar 1, 2003 | 184.20 |
| Feb 1, 2003 | 183.10 |
| Jan 1, 2003 | 181.70 |
| Dec 1, 2002 | 180.90 |
| Nov 1, 2002 | 181.30 |
| Oct 1, 2002 | 181.30 |
| Sep 1, 2002 | 181.00 |
| Aug 1, 2002 | 180.70 |
| Jul 1, 2002 | 180.10 |
| Jun 1, 2002 | 179.90 |
| May 1, 2002 | 179.80 |
| Apr 1, 2002 | 179.80 |
| Mar 1, 2002 | 178.80 |
| Feb 1, 2002 | 177.80 |
| Jan 1, 2002 | 177.10 |
| Dec 1, 2001 | 176.70 |
| Nov 1, 2001 | 177.40 |
| Oct 1, 2001 | 177.70 |
| Sep 1, 2001 | 178.30 |
| Aug 1, 2001 | 177.50 |
| Jul 1, 2001 | 177.50 |
| Jun 1, 2001 | 178.00 |
| May 1, 2001 | 177.70 |
| Apr 1, 2001 | 176.90 |
| Mar 1, 2001 | 176.20 |
| Feb 1, 2001 | 175.80 |
| Jan 1, 2001 | 175.10 |
| Dec 1, 2000 | 174.00 |
| Nov 1, 2000 | 174.10 |
| Oct 1, 2000 | 174.00 |
| Sep 1, 2000 | 173.70 |
| Aug 1, 2000 | 172.80 |
| Jul 1, 2000 | 172.80 |
| Jun 1, 2000 | 172.40 |
| May 1, 2000 | 171.50 |
| Apr 1, 2000 | 171.30 |
| Mar 1, 2000 | 171.20 |
| Feb 1, 2000 | 169.80 |
| Jan 1, 2000 | 168.80 |
| Dec 1, 1999 | 168.30 |
| Nov 1, 1999 | 168.30 |
| Oct 1, 1999 | 168.20 |
| Sep 1, 1999 | 167.90 |
| Aug 1, 1999 | 167.10 |
| Jul 1, 1999 | 166.70 |
| Jun 1, 1999 | 166.20 |
| May 1, 1999 | 166.20 |
| Apr 1, 1999 | 166.20 |
| Mar 1, 1999 | 165.00 |
| Feb 1, 1999 | 164.50 |
| Jan 1, 1999 | 164.30 |
| Dec 1, 1998 | 163.90 |
| Nov 1, 1998 | 164.00 |
| Oct 1, 1998 | 164.00 |
| Sep 1, 1998 | 163.60 |
| Aug 1, 1998 | 163.40 |
| Jul 1, 1998 | 163.20 |
| Jun 1, 1998 | 163.00 |
| May 1, 1998 | 162.80 |
| Apr 1, 1998 | 162.50 |
| Mar 1, 1998 | 162.20 |
| Feb 1, 1998 | 161.90 |
| Jan 1, 1998 | 161.60 |
| Dec 1, 1997 | 161.30 |
| Nov 1, 1997 | 161.50 |
| Oct 1, 1997 | 161.60 |
| Sep 1, 1997 | 161.20 |
| Aug 1, 1997 | 160.80 |
| Jul 1, 1997 | 160.50 |
| Jun 1, 1997 | 160.30 |
| May 1, 1997 | 160.10 |
| Apr 1, 1997 | 160.20 |
| Mar 1, 1997 | 160.00 |
| Feb 1, 1997 | 159.60 |
| Jan 1, 1997 | 159.10 |
| Dec 1, 1996 | 158.60 |
| Nov 1, 1996 | 158.60 |
| Oct 1, 1996 | 158.30 |
| Sep 1, 1996 | 157.80 |
| Aug 1, 1996 | 157.30 |
| Jul 1, 1996 | 157.00 |
| Jun 1, 1996 | 156.70 |
| May 1, 1996 | 156.60 |
| Apr 1, 1996 | 156.30 |
| Mar 1, 1996 | 155.70 |
| Feb 1, 1996 | 154.90 |
| Jan 1, 1996 | 154.40 |
| Dec 1, 1995 | 153.50 |
| Nov 1, 1995 | 153.60 |
| Oct 1, 1995 | 153.70 |
| Sep 1, 1995 | 153.20 |
| Aug 1, 1995 | 152.90 |
| Jul 1, 1995 | 152.50 |
| Jun 1, 1995 | 152.50 |
| May 1, 1995 | 152.20 |
| Apr 1, 1995 | 151.90 |
| Mar 1, 1995 | 151.40 |
| Feb 1, 1995 | 150.90 |
| Jan 1, 1995 | 150.30 |
| Dec 1, 1994 | 149.70 |
| Nov 1, 1994 | 149.70 |
| Oct 1, 1994 | 149.50 |
| Sep 1, 1994 | 149.40 |
| Aug 1, 1994 | 149.00 |
| Jul 1, 1994 | 148.40 |
| Jun 1, 1994 | 148.00 |
| May 1, 1994 | 147.50 |
| Apr 1, 1994 | 147.40 |
| Mar 1, 1994 | 147.20 |
| Feb 1, 1994 | 146.70 |
| Jan 1, 1994 | 146.20 |
| Dec 1, 1993 | 145.80 |
| Nov 1, 1993 | 145.80 |
| Oct 1, 1993 | 145.70 |
| Sep 1, 1993 | 145.10 |
| Aug 1, 1993 | 144.80 |
| Jul 1, 1993 | 144.40 |
| Jun 1, 1993 | 144.40 |
| May 1, 1993 | 144.20 |
| Apr 1, 1993 | 144.00 |
| Mar 1, 1993 | 143.60 |
| Feb 1, 1993 | 143.10 |
| Jan 1, 1993 | 142.60 |
| Dec 1, 1992 | 141.90 |
| Nov 1, 1992 | 142.00 |
| Oct 1, 1992 | 141.80 |
| Sep 1, 1992 | 141.30 |
| Aug 1, 1992 | 140.90 |
| Jul 1, 1992 | 140.50 |
| Jun 1, 1992 | 140.20 |
| May 1, 1992 | 139.70 |
| Apr 1, 1992 | 139.50 |
| Mar 1, 1992 | 139.30 |
| Feb 1, 1992 | 138.60 |
| Jan 1, 1992 | 138.10 |
| Dec 1, 1991 | 137.90 |
| Nov 1, 1991 | 137.80 |
| Oct 1, 1991 | 137.40 |
| Sep 1, 1991 | 137.20 |
| Aug 1, 1991 | 136.60 |
| Jul 1, 1991 | 136.20 |
| Jun 1, 1991 | 136.00 |
| May 1, 1991 | 135.60 |
| Apr 1, 1991 | 135.20 |
| Mar 1, 1991 | 135.00 |
| Feb 1, 1991 | 134.80 |
| Jan 1, 1991 | 134.60 |
| Dec 1, 1990 | 133.80 |
| Nov 1, 1990 | 133.80 |
| Oct 1, 1990 | 133.50 |
| Sep 1, 1990 | 132.70 |
| Aug 1, 1990 | 131.60 |
| Jul 1, 1990 | 130.40 |
| Jun 1, 1990 | 129.90 |
| May 1, 1990 | 129.20 |
| Apr 1, 1990 | 128.90 |
| Mar 1, 1990 | 128.70 |
| Feb 1, 1990 | 128.00 |
| Jan 1, 1990 | 127.40 |
| Dec 1, 1989 | 126.10 |
| Nov 1, 1989 | 125.90 |
| Oct 1, 1989 | 125.60 |
| Sep 1, 1989 | 125.00 |
| Aug 1, 1989 | 124.60 |
| Jul 1, 1989 | 124.40 |
| Jun 1, 1989 | 124.10 |
| May 1, 1989 | 123.80 |
| Apr 1, 1989 | 123.10 |
| Mar 1, 1989 | 122.30 |
| Feb 1, 1989 | 121.60 |
| Jan 1, 1989 | 121.10 |
| Dec 1, 1988 | 120.50 |
| Nov 1, 1988 | 120.30 |
| Oct 1, 1988 | 120.20 |
| Sep 1, 1988 | 119.80 |
| Aug 1, 1988 | 119.00 |
| Jul 1, 1988 | 118.50 |
| Jun 1, 1988 | 118.00 |
| May 1, 1988 | 117.50 |
| Apr 1, 1988 | 117.10 |
| Mar 1, 1988 | 116.50 |
| Feb 1, 1988 | 116.00 |
| Jan 1, 1988 | 115.70 |
| Dec 1, 1987 | 115.40 |
| Nov 1, 1987 | 115.40 |
| Oct 1, 1987 | 115.30 |
| Sep 1, 1987 | 115.00 |
| Aug 1, 1987 | 114.40 |
| Jul 1, 1987 | 113.80 |
| Jun 1, 1987 | 113.50 |
| May 1, 1987 | 113.10 |
| Apr 1, 1987 | 112.70 |
| Mar 1, 1987 | 112.10 |
| Feb 1, 1987 | 111.60 |
| Jan 1, 1987 | 111.20 |
| Dec 1, 1986 | 110.50 |
| Nov 1, 1986 | 110.40 |
| Oct 1, 1986 | 110.30 |
| Sep 1, 1986 | 110.20 |
| Aug 1, 1986 | 109.70 |
| Jul 1, 1986 | 109.50 |
| Jun 1, 1986 | 109.50 |
| May 1, 1986 | 108.90 |
| Apr 1, 1986 | 108.60 |
| Mar 1, 1986 | 108.80 |
| Feb 1, 1986 | 109.30 |
| Jan 1, 1986 | 109.60 |
| Dec 1, 1985 | 109.30 |
| Nov 1, 1985 | 109.00 |
| Oct 1, 1985 | 108.70 |
| Sep 1, 1985 | 108.30 |
| Aug 1, 1985 | 108.00 |
| Jul 1, 1985 | 107.80 |
| Jun 1, 1985 | 107.60 |
| May 1, 1985 | 107.30 |
| Apr 1, 1985 | 106.90 |
| Mar 1, 1985 | 106.40 |
| Feb 1, 1985 | 106.00 |
| Jan 1, 1985 | 105.50 |
| Dec 1, 1984 | 105.30 |
| Nov 1, 1984 | 105.30 |
| Oct 1, 1984 | 105.30 |
| Sep 1, 1984 | 105.00 |
| Aug 1, 1984 | 104.50 |
| Jul 1, 1984 | 104.10 |
| Jun 1, 1984 | 103.70 |
| May 1, 1984 | 103.40 |
| Apr 1, 1984 | 103.10 |
| Mar 1, 1984 | 102.60 |
| Feb 1, 1984 | 102.40 |
| Jan 1, 1984 | 101.90 |
| Dec 1, 1983 | 101.30 |
| Nov 1, 1983 | 101.20 |
| Oct 1, 1983 | 101.00 |
| Sep 1, 1983 | 100.70 |
| Aug 1, 1983 | 100.20 |
| Jul 1, 1983 | 99.90 |
| Jun 1, 1983 | 99.50 |
| May 1, 1983 | 99.20 |
| Apr 1, 1983 | 98.60 |
| Mar 1, 1983 | 97.90 |
| Feb 1, 1983 | 97.90 |
| Jan 1, 1983 | 97.80 |
| Dec 1, 1982 | 97.60 |
| Nov 1, 1982 | 98.00 |
| Oct 1, 1982 | 98.20 |
| Sep 1, 1982 | 97.90 |
| Aug 1, 1982 | 97.70 |
| Jul 1, 1982 | 97.50 |
| Jun 1, 1982 | 97.00 |
| May 1, 1982 | 95.80 |
| Apr 1, 1982 | 94.90 |
| Mar 1, 1982 | 94.50 |
| Feb 1, 1982 | 94.60 |
| Jan 1, 1982 | 94.30 |
| Dec 1, 1981 | 94.00 |
| Nov 1, 1981 | 93.70 |
| Oct 1, 1981 | 93.40 |
| Sep 1, 1981 | 93.20 |
| Aug 1, 1981 | 92.30 |
| Jul 1, 1981 | 91.60 |
| Jun 1, 1981 | 90.60 |
| May 1, 1981 | 89.80 |
| Apr 1, 1981 | 89.10 |
| Mar 1, 1981 | 88.50 |
| Feb 1, 1981 | 87.90 |
| Jan 1, 1981 | 87.00 |
| Dec 1, 1980 | 86.30 |
| Nov 1, 1980 | 85.50 |
| Oct 1, 1980 | 84.80 |
| Sep 1, 1980 | 84.00 |
| Aug 1, 1980 | 83.30 |
| Jul 1, 1980 | 82.70 |
| Jun 1, 1980 | 82.70 |
| May 1, 1980 | 81.80 |
| Apr 1, 1980 | 81.00 |
| Mar 1, 1980 | 80.10 |
| Feb 1, 1980 | 78.90 |
| Jan 1, 1980 | 77.80 |
| Dec 1, 1979 | 76.70 |
| Nov 1, 1979 | 75.90 |
| Oct 1, 1979 | 75.20 |
| Sep 1, 1979 | 74.60 |
| Aug 1, 1979 | 73.80 |
| Jul 1, 1979 | 73.10 |
| Jun 1, 1979 | 72.30 |
| May 1, 1979 | 71.50 |
| Apr 1, 1979 | 70.60 |
| Mar 1, 1979 | 69.80 |
| Feb 1, 1979 | 69.10 |
| Jan 1, 1979 | 68.30 |
| Dec 1, 1978 | 67.70 |
| Nov 1, 1978 | 67.40 |
| Oct 1, 1978 | 67.10 |
| Sep 1, 1978 | 66.50 |
| Aug 1, 1978 | 66.00 |
| Jul 1, 1978 | 65.70 |
| Jun 1, 1978 | 65.20 |
| May 1, 1978 | 64.50 |
| Apr 1, 1978 | 63.90 |
| Mar 1, 1978 | 63.40 |
| Feb 1, 1978 | 62.90 |
| Jan 1, 1978 | 62.50 |
| Dec 1, 1977 | 62.10 |
| Nov 1, 1977 | 61.90 |
| Oct 1, 1977 | 61.60 |
| Sep 1, 1977 | 61.40 |
| Aug 1, 1977 | 61.20 |
| Jul 1, 1977 | 61.00 |
| Jun 1, 1977 | 60.70 |
| May 1, 1977 | 60.30 |
| Apr 1, 1977 | 60.00 |
| Mar 1, 1977 | 59.50 |
| Feb 1, 1977 | 59.10 |
| Jan 1, 1977 | 58.50 |
| Dec 1, 1976 | 58.20 |
| Nov 1, 1976 | 58.00 |
| Oct 1, 1976 | 57.90 |
| Sep 1, 1976 | 57.60 |
| Aug 1, 1976 | 57.40 |
| Jul 1, 1976 | 57.10 |
| Jun 1, 1976 | 56.80 |
| May 1, 1976 | 56.50 |
| Apr 1, 1976 | 56.10 |
| Mar 1, 1976 | 55.90 |
| Feb 1, 1976 | 55.80 |
| Jan 1, 1976 | 55.60 |
| Dec 1, 1975 | 55.50 |
| Nov 1, 1975 | 55.30 |
| Oct 1, 1975 | 54.90 |
| Sep 1, 1975 | 54.60 |
| Aug 1, 1975 | 54.30 |
| Jul 1, 1975 | 54.20 |
| Jun 1, 1975 | 53.60 |
| May 1, 1975 | 53.20 |
| Apr 1, 1975 | 52.90 |
| Mar 1, 1975 | 52.70 |
| Feb 1, 1975 | 52.50 |
| Jan 1, 1975 | 52.10 |
| Dec 1, 1974 | 51.90 |
| Nov 1, 1974 | 51.50 |
| Oct 1, 1974 | 51.10 |
| Sep 1, 1974 | 50.60 |
| Aug 1, 1974 | 50.00 |
| Jul 1, 1974 | 49.40 |
| Jun 1, 1974 | 49.00 |
| May 1, 1974 | 48.60 |
| Apr 1, 1974 | 48.00 |
| Mar 1, 1974 | 47.80 |
| Feb 1, 1974 | 47.20 |
| Jan 1, 1974 | 46.60 |
| Dec 1, 1973 | 46.20 |
| Nov 1, 1973 | 45.90 |
| Oct 1, 1973 | 45.60 |
| Sep 1, 1973 | 45.20 |
| Aug 1, 1973 | 45.10 |
| Jul 1, 1973 | 44.30 |
| Jun 1, 1973 | 44.20 |
| May 1, 1973 | 43.90 |
| Apr 1, 1973 | 43.60 |
| Mar 1, 1973 | 43.30 |
| Feb 1, 1973 | 42.90 |
| Jan 1, 1973 | 42.60 |
| Dec 1, 1972 | 42.50 |
| Nov 1, 1972 | 42.40 |
| Oct 1, 1972 | 42.30 |
| Sep 1, 1972 | 42.10 |
| Aug 1, 1972 | 42.00 |
| Jul 1, 1972 | 41.90 |
| Jun 1, 1972 | 41.70 |
| May 1, 1972 | 41.60 |
| Apr 1, 1972 | 41.50 |
| Mar 1, 1972 | 41.40 |
| Feb 1, 1972 | 41.30 |
| Jan 1, 1972 | 41.10 |
| Dec 1, 1971 | 41.10 |
| Nov 1, 1971 | 40.90 |
| Oct 1, 1971 | 40.90 |
| Sep 1, 1971 | 40.80 |
| Aug 1, 1971 | 40.80 |
| Jul 1, 1971 | 40.70 |
| Jun 1, 1971 | 40.60 |
| May 1, 1971 | 40.30 |
| Apr 1, 1971 | 40.10 |
| Mar 1, 1971 | 40.00 |
| Feb 1, 1971 | 39.90 |
| Jan 1, 1971 | 39.80 |
| Dec 1, 1970 | 39.80 |
| Nov 1, 1970 | 39.60 |
| Oct 1, 1970 | 39.40 |
| Sep 1, 1970 | 39.20 |
| Aug 1, 1970 | 39.00 |
| Jul 1, 1970 | 39.00 |
| Jun 1, 1970 | 38.80 |
| May 1, 1970 | 38.60 |
| Apr 1, 1970 | 38.50 |
| Mar 1, 1970 | 38.20 |
| Feb 1, 1970 | 38.00 |
| Jan 1, 1970 | 37.80 |
| Dec 1, 1969 | 37.70 |
| Nov 1, 1969 | 37.50 |
| Oct 1, 1969 | 37.30 |
| Sep 1, 1969 | 37.10 |
| Aug 1, 1969 | 37.00 |
| Jul 1, 1969 | 36.80 |
| Jun 1, 1969 | 36.60 |
| May 1, 1969 | 36.40 |
| Apr 1, 1969 | 36.30 |
| Mar 1, 1969 | 36.10 |
| Feb 1, 1969 | 35.80 |
| Jan 1, 1969 | 35.60 |
| Dec 1, 1968 | 35.50 |
| Nov 1, 1968 | 35.40 |
| Oct 1, 1968 | 35.30 |
| Sep 1, 1968 | 35.10 |
| Aug 1, 1968 | 35.00 |
| Jul 1, 1968 | 34.90 |
| Jun 1, 1968 | 34.70 |
| May 1, 1968 | 34.50 |
| Apr 1, 1968 | 34.40 |
| Mar 1, 1968 | 34.30 |
| Feb 1, 1968 | 34.20 |
| Jan 1, 1968 | 34.10 |
| Dec 1, 1967 | 33.90 |
| Nov 1, 1967 | 33.80 |
| Oct 1, 1967 | 33.70 |
| Sep 1, 1967 | 33.60 |
| Aug 1, 1967 | 33.50 |
| Jul 1, 1967 | 33.40 |
| Jun 1, 1967 | 33.30 |
| May 1, 1967 | 33.20 |
| Apr 1, 1967 | 33.10 |
| Mar 1, 1967 | 33.00 |
| Feb 1, 1967 | 32.90 |
| Jan 1, 1967 | 32.90 |
| Dec 1, 1966 | 32.90 |
| Nov 1, 1966 | 32.90 |
| Oct 1, 1966 | 32.90 |
| Sep 1, 1966 | 32.70 |
| Aug 1, 1966 | 32.70 |
| Jul 1, 1966 | 32.50 |
| Jun 1, 1966 | 32.40 |
| May 1, 1966 | 32.30 |
| Apr 1, 1966 | 32.30 |
| Mar 1, 1966 | 32.10 |
| Feb 1, 1966 | 32.00 |
| Jan 1, 1966 | 31.80 |
| Dec 1, 1965 | 31.80 |
| Nov 1, 1965 | 31.70 |
| Oct 1, 1965 | 31.70 |
| Sep 1, 1965 | 31.60 |
| Aug 1, 1965 | 31.60 |
| Jul 1, 1965 | 31.60 |
| Jun 1, 1965 | 31.60 |
| May 1, 1965 | 31.40 |
| Apr 1, 1965 | 31.40 |
| Mar 1, 1965 | 31.30 |
| Feb 1, 1965 | 31.20 |
| Jan 1, 1965 | 31.20 |
| Dec 1, 1964 | 31.20 |
| Nov 1, 1964 | 31.20 |
| Oct 1, 1964 | 31.10 |
| Sep 1, 1964 | 31.10 |
| Aug 1, 1964 | 31.00 |
| Jul 1, 1964 | 31.10 |
| Jun 1, 1964 | 31.00 |
| May 1, 1964 | 30.90 |
| Apr 1, 1964 | 30.90 |
| Mar 1, 1964 | 30.90 |
| Feb 1, 1964 | 30.90 |
| Jan 1, 1964 | 30.90 |
| Dec 1, 1963 | 30.90 |
| Nov 1, 1963 | 30.80 |
| Oct 1, 1963 | 30.80 |
| Sep 1, 1963 | 30.70 |
| Aug 1, 1963 | 30.70 |
| Jul 1, 1963 | 30.70 |
| Jun 1, 1963 | 30.60 |
| May 1, 1963 | 30.50 |
| Apr 1, 1963 | 30.50 |
| Mar 1, 1963 | 30.50 |
| Feb 1, 1963 | 30.40 |
| Jan 1, 1963 | 30.40 |
| Dec 1, 1962 | 30.40 |
| Nov 1, 1962 | 30.40 |
| Oct 1, 1962 | 30.40 |
| Sep 1, 1962 | 30.40 |
| Aug 1, 1962 | 30.30 |
| Jul 1, 1962 | 30.30 |
| Jun 1, 1962 | 30.20 |
| May 1, 1962 | 30.20 |
| Apr 1, 1962 | 30.20 |
| Mar 1, 1962 | 30.10 |
| Feb 1, 1962 | 30.10 |
| Jan 1, 1962 | 30.00 |
| Dec 1, 1961 | 30.00 |
| Nov 1, 1961 | 30.00 |
| Oct 1, 1961 | 30.00 |
| Sep 1, 1961 | 30.00 |
| Aug 1, 1961 | 29.90 |
| Jul 1, 1961 | 30.00 |
| Jun 1, 1961 | 29.80 |
| May 1, 1961 | 29.80 |
| Apr 1, 1961 | 29.80 |
| Mar 1, 1961 | 29.80 |
| Feb 1, 1961 | 29.80 |
| Jan 1, 1961 | 29.80 |
| Dec 1, 1960 | 29.80 |
| Nov 1, 1960 | 29.80 |
| Oct 1, 1960 | 29.80 |
| Sep 1, 1960 | 29.60 |
| Aug 1, 1960 | 29.60 |
| Jul 1, 1960 | 29.60 |
| Jun 1, 1960 | 29.60 |
| May 1, 1960 | 29.50 |
| Apr 1, 1960 | 29.50 |
| Mar 1, 1960 | 29.40 |
| Feb 1, 1960 | 29.40 |
| Jan 1, 1960 | 29.30 |
| Dec 1, 1959 | 29.40 |
| Nov 1, 1959 | 29.40 |
| Oct 1, 1959 | 29.40 |
| Sep 1, 1959 | 29.30 |
| Aug 1, 1959 | 29.20 |
| Jul 1, 1959 | 29.20 |
| Jun 1, 1959 | 29.10 |
| May 1, 1959 | 29.00 |
| Apr 1, 1959 | 29.00 |
| Mar 1, 1959 | 28.90 |
| Feb 1, 1959 | 28.90 |
| Jan 1, 1959 | 29.00 |
| Dec 1, 1958 | 28.90 |
| Nov 1, 1958 | 29.00 |
| Oct 1, 1958 | 28.90 |
| Sep 1, 1958 | 28.90 |
| Aug 1, 1958 | 28.90 |
| Jul 1, 1958 | 29.00 |
| Jun 1, 1958 | 28.90 |
| May 1, 1958 | 28.90 |
| Apr 1, 1958 | 28.90 |
| Mar 1, 1958 | 28.80 |
| Feb 1, 1958 | 28.60 |
| Jan 1, 1958 | 28.60 |
| Dec 1, 1957 | 28.40 |
| Nov 1, 1957 | 28.40 |
| Oct 1, 1957 | 28.30 |
| Sep 1, 1957 | 28.30 |
| Aug 1, 1957 | 28.30 |
| Jul 1, 1957 | 28.30 |
| Jun 1, 1957 | 28.10 |
| May 1, 1957 | 28.00 |
| Apr 1, 1957 | 27.90 |
| Mar 1, 1957 | 27.80 |
| Feb 1, 1957 | 27.70 |
| Jan 1, 1957 | 27.60 |
| Dec 1, 1956 | 27.60 |
| Nov 1, 1956 | 27.50 |
| Oct 1, 1956 | 27.50 |
| Sep 1, 1956 | 27.40 |
| Aug 1, 1956 | 27.30 |
| Jul 1, 1956 | 27.40 |
| Jun 1, 1956 | 27.20 |
| May 1, 1956 | 27.00 |
| Apr 1, 1956 | 26.90 |
| Mar 1, 1956 | 26.80 |
| Feb 1, 1956 | 26.80 |
| Jan 1, 1956 | 26.80 |
| Dec 1, 1955 | 26.80 |
| Nov 1, 1955 | 26.90 |
| Oct 1, 1955 | 26.90 |
| Sep 1, 1955 | 26.90 |
| Aug 1, 1955 | 26.80 |
| Jul 1, 1955 | 26.80 |
| Jun 1, 1955 | 26.70 |
| May 1, 1955 | 26.70 |
| Apr 1, 1955 | 26.70 |
| Mar 1, 1955 | 26.70 |
| Feb 1, 1955 | 26.70 |
| Jan 1, 1955 | 26.70 |
| Dec 1, 1954 | 26.70 |
| Nov 1, 1954 | 26.80 |
| Oct 1, 1954 | 26.80 |
| Sep 1, 1954 | 26.80 |
| Aug 1, 1954 | 26.90 |
| Jul 1, 1954 | 26.90 |
| Jun 1, 1954 | 26.90 |
| May 1, 1954 | 26.90 |
| Apr 1, 1954 | 26.80 |
| Mar 1, 1954 | 26.90 |
| Feb 1, 1954 | 26.90 |
| Jan 1, 1954 | 26.90 |
| Dec 1, 1953 | 26.90 |
| Nov 1, 1953 | 26.90 |
| Oct 1, 1953 | 27.00 |
| Sep 1, 1953 | 26.90 |
| Aug 1, 1953 | 26.90 |
| Jul 1, 1953 | 26.80 |
| Jun 1, 1953 | 26.80 |
| May 1, 1953 | 26.70 |
| Apr 1, 1953 | 26.60 |
| Mar 1, 1953 | 26.60 |
| Feb 1, 1953 | 26.50 |
| Jan 1, 1953 | 26.60 |
| Dec 1, 1952 | 26.70 |
| Nov 1, 1952 | 26.70 |
| Oct 1, 1952 | 26.70 |
| Sep 1, 1952 | 26.70 |
| Aug 1, 1952 | 26.70 |
| Jul 1, 1952 | 26.70 |
| Jun 1, 1952 | 26.50 |
| May 1, 1952 | 26.40 |
| Apr 1, 1952 | 26.40 |
| Mar 1, 1952 | 26.30 |
| Feb 1, 1952 | 26.30 |
| Jan 1, 1952 | 26.50 |
| Dec 1, 1951 | 26.50 |
| Nov 1, 1951 | 26.40 |
| Oct 1, 1951 | 26.20 |
| Sep 1, 1951 | 26.10 |
| Aug 1, 1951 | 25.90 |
| Jul 1, 1951 | 25.90 |
| Jun 1, 1951 | 25.90 |
| May 1, 1951 | 25.90 |
| Apr 1, 1951 | 25.80 |
| Mar 1, 1951 | 25.80 |
| Feb 1, 1951 | 25.70 |
| Jan 1, 1951 | 25.40 |
| Dec 1, 1950 | 25.00 |
| Nov 1, 1950 | 24.70 |
| Oct 1, 1950 | 24.60 |
| Sep 1, 1950 | 24.40 |
| Aug 1, 1950 | 24.30 |
| Jul 1, 1950 | 24.10 |
| Jun 1, 1950 | 23.80 |
| May 1, 1950 | 23.70 |
| Apr 1, 1950 | 23.60 |
| Mar 1, 1950 | 23.60 |
| Feb 1, 1950 | 23.50 |
| Jan 1, 1950 | 23.50 |
| Dec 1, 1949 | 23.60 |
| Nov 1, 1949 | 23.80 |
| Oct 1, 1949 | 23.70 |
| Sep 1, 1949 | 23.90 |
| Aug 1, 1949 | 23.80 |
| Jul 1, 1949 | 23.70 |
| Jun 1, 1949 | 23.90 |
| May 1, 1949 | 23.80 |
| Apr 1, 1949 | 23.90 |
| Mar 1, 1949 | 23.80 |
| Feb 1, 1949 | 23.80 |
| Jan 1, 1949 | 24.00 |
| Dec 1, 1948 | 24.10 |
| Nov 1, 1948 | 24.20 |
| Oct 1, 1948 | 24.40 |
| Sep 1, 1948 | 24.50 |
| Aug 1, 1948 | 24.50 |
| Jul 1, 1948 | 24.40 |
| Jun 1, 1948 | 24.10 |
| May 1, 1948 | 23.90 |
| Apr 1, 1948 | 23.80 |
| Mar 1, 1948 | 23.40 |
| Feb 1, 1948 | 23.50 |
| Jan 1, 1948 | 23.70 |
| Dec 1, 1947 | 23.40 |
| Nov 1, 1947 | 23.10 |
| Oct 1, 1947 | 23.00 |
| Sep 1, 1947 | 23.00 |
| Aug 1, 1947 | 22.50 |
| Jul 1, 1947 | 22.20 |
| Jun 1, 1947 | 22.00 |
| May 1, 1947 | 21.90 |
| Apr 1, 1947 | 21.90 |
| Mar 1, 1947 | 21.90 |
| Feb 1, 1947 | 21.50 |
| Jan 1, 1947 | 21.50 |
| Dec 1, 1946 | 21.50 |
| Nov 1, 1946 | 21.30 |
| Oct 1, 1946 | 20.80 |
| Sep 1, 1946 | 20.40 |
| Aug 1, 1946 | 20.20 |
| Jul 1, 1946 | 19.80 |
| Jun 1, 1946 | 18.70 |
| May 1, 1946 | 18.50 |
| Apr 1, 1946 | 18.40 |
| Mar 1, 1946 | 18.30 |
| Feb 1, 1946 | 18.10 |
| Jan 1, 1946 | 18.20 |
| Dec 1, 1945 | 18.20 |
| Nov 1, 1945 | 18.10 |
| Oct 1, 1945 | 18.10 |
| Sep 1, 1945 | 18.10 |
| Aug 1, 1945 | 18.10 |
| Jul 1, 1945 | 18.10 |
| Jun 1, 1945 | 18.10 |
| May 1, 1945 | 17.90 |
| Apr 1, 1945 | 17.80 |
| Mar 1, 1945 | 17.80 |
| Feb 1, 1945 | 17.80 |
| Jan 1, 1945 | 17.80 |
| Dec 1, 1944 | 17.80 |
| Nov 1, 1944 | 17.70 |
| Oct 1, 1944 | 17.70 |
| Sep 1, 1944 | 17.70 |
| Aug 1, 1944 | 17.70 |
| Jul 1, 1944 | 17.70 |
| Jun 1, 1944 | 17.60 |
| May 1, 1944 | 17.50 |
| Apr 1, 1944 | 17.50 |
| Mar 1, 1944 | 17.40 |
| Feb 1, 1944 | 17.40 |
| Jan 1, 1944 | 17.40 |
| Dec 1, 1943 | 17.40 |
| Nov 1, 1943 | 17.40 |
| Oct 1, 1943 | 17.40 |
| Sep 1, 1943 | 17.40 |
| Aug 1, 1943 | 17.30 |
| Jul 1, 1943 | 17.40 |
| Jun 1, 1943 | 17.50 |
| May 1, 1943 | 17.50 |
| Apr 1, 1943 | 17.40 |
| Mar 1, 1943 | 17.20 |
| Feb 1, 1943 | 16.90 |
| Jan 1, 1943 | 16.90 |
| Dec 1, 1942 | 16.90 |
| Nov 1, 1942 | 16.80 |
| Oct 1, 1942 | 16.70 |
| Sep 1, 1942 | 16.50 |
| Aug 1, 1942 | 16.50 |
| Jul 1, 1942 | 16.40 |
| Jun 1, 1942 | 16.30 |
| May 1, 1942 | 16.30 |
| Apr 1, 1942 | 16.10 |
| Mar 1, 1942 | 16.00 |
| Feb 1, 1942 | 15.80 |
| Jan 1, 1942 | 15.70 |
| Dec 1, 1941 | 15.50 |
| Nov 1, 1941 | 15.40 |
| Oct 1, 1941 | 15.30 |
| Sep 1, 1941 | 15.10 |
| Aug 1, 1941 | 14.90 |
| Jul 1, 1941 | 14.70 |
| Jun 1, 1941 | 14.70 |
| May 1, 1941 | 14.40 |
| Apr 1, 1941 | 14.30 |
| Mar 1, 1941 | 14.20 |
| Feb 1, 1941 | 14.10 |
| Jan 1, 1941 | 14.10 |
| Dec 1, 1940 | 14.10 |
| Nov 1, 1940 | 14.00 |
| Oct 1, 1940 | 14.00 |
| Sep 1, 1940 | 14.00 |
| Aug 1, 1940 | 14.00 |
| Jul 1, 1940 | 14.00 |
| Jun 1, 1940 | 14.10 |
| May 1, 1940 | 14.00 |
| Apr 1, 1940 | 14.00 |
| Mar 1, 1940 | 14.00 |
| Feb 1, 1940 | 14.00 |
| Jan 1, 1940 | 13.90 |
| Dec 1, 1939 | 14.00 |
| Nov 1, 1939 | 14.00 |
| Oct 1, 1939 | 14.00 |
| Sep 1, 1939 | 14.10 |
| Aug 1, 1939 | 13.80 |
| Jul 1, 1939 | 13.80 |
| Jun 1, 1939 | 13.80 |
| May 1, 1939 | 13.80 |
| Apr 1, 1939 | 13.80 |
| Mar 1, 1939 | 13.90 |
| Feb 1, 1939 | 13.90 |
| Jan 1, 1939 | 14.00 |
| Dec 1, 1938 | 14.00 |
| Nov 1, 1938 | 14.00 |
| Oct 1, 1938 | 14.00 |
| Sep 1, 1938 | 14.10 |
| Aug 1, 1938 | 14.10 |
| Jul 1, 1938 | 14.10 |
| Jun 1, 1938 | 14.10 |
| May 1, 1938 | 14.10 |
| Apr 1, 1938 | 14.20 |
| Mar 1, 1938 | 14.10 |
| Feb 1, 1938 | 14.10 |
| Jan 1, 1938 | 14.20 |
| Dec 1, 1937 | 14.40 |
| Nov 1, 1937 | 14.50 |
| Oct 1, 1937 | 14.60 |
| Sep 1, 1937 | 14.60 |
| Aug 1, 1937 | 14.50 |
| Jul 1, 1937 | 14.50 |
| Jun 1, 1937 | 14.40 |
| May 1, 1937 | 14.40 |
| Apr 1, 1937 | 14.30 |
| Mar 1, 1937 | 14.20 |
| Feb 1, 1937 | 14.10 |
| Jan 1, 1937 | 14.10 |
| Dec 1, 1936 | 14.00 |
| Nov 1, 1936 | 14.00 |
| Oct 1, 1936 | 14.00 |
| Sep 1, 1936 | 14.00 |
| Aug 1, 1936 | 14.00 |
| Jul 1, 1936 | 13.90 |
| Jun 1, 1936 | 13.80 |
| May 1, 1936 | 13.70 |
| Apr 1, 1936 | 13.70 |
| Mar 1, 1936 | 13.70 |
| Feb 1, 1936 | 13.80 |
| Jan 1, 1936 | 13.80 |
| Dec 1, 1935 | 13.80 |
| Nov 1, 1935 | 13.80 |
| Oct 1, 1935 | 13.70 |
| Sep 1, 1935 | 13.70 |
| Aug 1, 1935 | 13.70 |
| Jul 1, 1935 | 13.70 |
| Jun 1, 1935 | 13.70 |
| May 1, 1935 | 13.80 |
| Apr 1, 1935 | 13.80 |
| Mar 1, 1935 | 13.70 |
| Feb 1, 1935 | 13.70 |
| Jan 1, 1935 | 13.60 |
| Dec 1, 1934 | 13.40 |
| Nov 1, 1934 | 13.50 |
| Oct 1, 1934 | 13.50 |
| Sep 1, 1934 | 13.60 |
| Aug 1, 1934 | 13.40 |
| Jul 1, 1934 | 13.40 |
| Jun 1, 1934 | 13.40 |
| May 1, 1934 | 13.30 |
| Apr 1, 1934 | 13.30 |
| Mar 1, 1934 | 13.30 |
| Feb 1, 1934 | 13.30 |
| Jan 1, 1934 | 13.20 |
| Dec 1, 1933 | 13.20 |
| Nov 1, 1933 | 13.20 |
| Oct 1, 1933 | 13.20 |
| Sep 1, 1933 | 13.20 |
| Aug 1, 1933 | 13.20 |
| Jul 1, 1933 | 13.10 |
| Jun 1, 1933 | 12.70 |
| May 1, 1933 | 12.60 |
| Apr 1, 1933 | 12.60 |
| Mar 1, 1933 | 12.60 |
| Feb 1, 1933 | 12.70 |
| Jan 1, 1933 | 12.90 |
| Dec 1, 1932 | 13.10 |
| Nov 1, 1932 | 13.20 |
| Oct 1, 1932 | 13.30 |
| Sep 1, 1932 | 13.40 |
| Aug 1, 1932 | 13.50 |
| Jul 1, 1932 | 13.60 |
| Jun 1, 1932 | 13.60 |
| May 1, 1932 | 13.70 |
| Apr 1, 1932 | 13.90 |
| Mar 1, 1932 | 14.00 |
| Feb 1, 1932 | 14.10 |
| Jan 1, 1932 | 14.30 |
| Dec 1, 1931 | 14.60 |
| Nov 1, 1931 | 14.70 |
| Oct 1, 1931 | 14.90 |
| Sep 1, 1931 | 15.00 |
| Aug 1, 1931 | 15.10 |
| Jul 1, 1931 | 15.10 |
| Jun 1, 1931 | 15.10 |
| May 1, 1931 | 15.30 |
| Apr 1, 1931 | 15.50 |
| Mar 1, 1931 | 15.60 |
| Feb 1, 1931 | 15.70 |
| Jan 1, 1931 | 15.90 |
| Dec 1, 1930 | 16.10 |
| Nov 1, 1930 | 16.40 |
| Oct 1, 1930 | 16.50 |
| Sep 1, 1930 | 16.60 |
| Aug 1, 1930 | 16.50 |
| Jul 1, 1930 | 16.60 |
| Jun 1, 1930 | 16.80 |
| May 1, 1930 | 16.90 |
| Apr 1, 1930 | 17.00 |
| Mar 1, 1930 | 16.90 |
| Feb 1, 1930 | 17.00 |
| Jan 1, 1930 | 17.10 |
| Dec 1, 1929 | 17.20 |
| Nov 1, 1929 | 17.30 |
| Oct 1, 1929 | 17.30 |
| Sep 1, 1929 | 17.30 |
| Aug 1, 1929 | 17.30 |
| Jul 1, 1929 | 17.30 |
| Jun 1, 1929 | 17.10 |
| May 1, 1929 | 17.00 |
| Apr 1, 1929 | 16.90 |
| Mar 1, 1929 | 17.00 |
| Feb 1, 1929 | 17.10 |
| Jan 1, 1929 | 17.10 |
| Dec 1, 1928 | 17.10 |
| Nov 1, 1928 | 17.20 |
| Oct 1, 1928 | 17.20 |
| Sep 1, 1928 | 17.30 |
| Aug 1, 1928 | 17.10 |
| Jul 1, 1928 | 17.10 |
| Jun 1, 1928 | 17.10 |
| May 1, 1928 | 17.20 |
| Apr 1, 1928 | 17.10 |
| Mar 1, 1928 | 17.10 |
| Feb 1, 1928 | 17.10 |
| Jan 1, 1928 | 17.30 |
| Dec 1, 1927 | 17.30 |
| Nov 1, 1927 | 17.30 |
| Oct 1, 1927 | 17.40 |
| Sep 1, 1927 | 17.30 |
| Aug 1, 1927 | 17.20 |
| Jul 1, 1927 | 17.30 |
| Jun 1, 1927 | 17.60 |
| May 1, 1927 | 17.40 |
| Apr 1, 1927 | 17.30 |
| Mar 1, 1927 | 17.30 |
| Feb 1, 1927 | 17.40 |
| Jan 1, 1927 | 17.50 |
| Dec 1, 1926 | 17.70 |
| Nov 1, 1926 | 17.70 |
| Oct 1, 1926 | 17.60 |
| Sep 1, 1926 | 17.50 |
| Aug 1, 1926 | 17.40 |
| Jul 1, 1926 | 17.50 |
| Jun 1, 1926 | 17.70 |
| May 1, 1926 | 17.80 |
| Apr 1, 1926 | 17.90 |
| Mar 1, 1926 | 17.80 |
| Feb 1, 1926 | 17.90 |
| Jan 1, 1926 | 17.90 |
| Dec 1, 1925 | 17.90 |
| Nov 1, 1925 | 18.00 |
| Oct 1, 1925 | 17.70 |
| Sep 1, 1925 | 17.70 |
| Aug 1, 1925 | 17.70 |
| Jul 1, 1925 | 17.70 |
| Jun 1, 1925 | 17.50 |
| May 1, 1925 | 17.30 |
| Apr 1, 1925 | 17.20 |
| Mar 1, 1925 | 17.30 |
| Feb 1, 1925 | 17.20 |
| Jan 1, 1925 | 17.30 |
| Dec 1, 1924 | 17.30 |
| Nov 1, 1924 | 17.20 |
| Oct 1, 1924 | 17.20 |
| Sep 1, 1924 | 17.10 |
| Aug 1, 1924 | 17.00 |
| Jul 1, 1924 | 17.10 |
| Jun 1, 1924 | 17.00 |
| May 1, 1924 | 17.00 |
| Apr 1, 1924 | 17.00 |
| Mar 1, 1924 | 17.10 |
| Feb 1, 1924 | 17.20 |
| Jan 1, 1924 | 17.30 |
| Dec 1, 1923 | 17.30 |
| Nov 1, 1923 | 17.30 |
| Oct 1, 1923 | 17.30 |
| Sep 1, 1923 | 17.20 |
| Aug 1, 1923 | 17.10 |
| Jul 1, 1923 | 17.20 |
| Jun 1, 1923 | 17.00 |
| May 1, 1923 | 16.90 |
| Apr 1, 1923 | 16.90 |
| Mar 1, 1923 | 16.80 |
| Feb 1, 1923 | 16.80 |
| Jan 1, 1923 | 16.80 |
| Dec 1, 1922 | 16.90 |
| Nov 1, 1922 | 16.80 |
| Oct 1, 1922 | 16.70 |
| Sep 1, 1922 | 16.60 |
| Aug 1, 1922 | 16.60 |
| Jul 1, 1922 | 16.80 |
| Jun 1, 1922 | 16.70 |
| May 1, 1922 | 16.70 |
| Apr 1, 1922 | 16.70 |
| Mar 1, 1922 | 16.70 |
| Feb 1, 1922 | 16.90 |
| Jan 1, 1922 | 16.90 |
| Dec 1, 1921 | 17.30 |
| Nov 1, 1921 | 17.40 |
| Oct 1, 1921 | 17.50 |
| Sep 1, 1921 | 17.50 |
| Aug 1, 1921 | 17.70 |
| Jul 1, 1921 | 17.70 |
| Jun 1, 1921 | 17.60 |
| May 1, 1921 | 17.70 |
| Apr 1, 1921 | 18.10 |
| Mar 1, 1921 | 18.30 |
| Feb 1, 1921 | 18.40 |
| Jan 1, 1921 | 19.00 |
| Dec 1, 1920 | 19.40 |
| Nov 1, 1920 | 19.80 |
| Oct 1, 1920 | 19.90 |
| Sep 1, 1920 | 20.00 |
| Aug 1, 1920 | 20.30 |
| Jul 1, 1920 | 20.80 |
| Jun 1, 1920 | 20.90 |
| May 1, 1920 | 20.60 |
| Apr 1, 1920 | 20.30 |
| Mar 1, 1920 | 19.70 |
| Feb 1, 1920 | 19.50 |
| Jan 1, 1920 | 19.30 |
| Dec 1, 1919 | 18.90 |
| Nov 1, 1919 | 18.50 |
| Oct 1, 1919 | 18.10 |
| Sep 1, 1919 | 17.80 |
| Aug 1, 1919 | 17.70 |
| Jul 1, 1919 | 17.40 |
| Jun 1, 1919 | 16.90 |
| May 1, 1919 | 16.90 |
| Apr 1, 1919 | 16.70 |
| Mar 1, 1919 | 16.40 |
| Feb 1, 1919 | 16.20 |
| Jan 1, 1919 | 16.50 |
| Dec 1, 1918 | 16.50 |
| Nov 1, 1918 | 16.30 |
| Oct 1, 1918 | 16.00 |
| Sep 1, 1918 | 15.70 |
| Aug 1, 1918 | 15.40 |
| Jul 1, 1918 | 15.10 |
| Jun 1, 1918 | 14.70 |
| May 1, 1918 | 14.50 |
| Apr 1, 1918 | 14.20 |
| Mar 1, 1918 | 14.00 |
| Feb 1, 1918 | 14.10 |
| Jan 1, 1918 | 14.00 |
| Dec 1, 1917 | 13.70 |
| Nov 1, 1917 | 13.50 |
| Oct 1, 1917 | 13.50 |
| Sep 1, 1917 | 13.30 |
| Aug 1, 1917 | 13.00 |
| Jul 1, 1917 | 12.80 |
| Jun 1, 1917 | 13.00 |
| May 1, 1917 | 12.80 |
| Apr 1, 1917 | 12.60 |
| Mar 1, 1917 | 12.00 |
| Feb 1, 1917 | 12.00 |
| Jan 1, 1917 | 11.70 |
| Dec 1, 1916 | 11.60 |
| Nov 1, 1916 | 11.50 |
| Oct 1, 1916 | 11.30 |
| Sep 1, 1916 | 11.10 |
| Aug 1, 1916 | 10.90 |
| Jul 1, 1916 | 10.80 |
| Jun 1, 1916 | 10.80 |
| May 1, 1916 | 10.70 |
| Apr 1, 1916 | 10.60 |
| Mar 1, 1916 | 10.50 |
| Feb 1, 1916 | 10.40 |
| Jan 1, 1916 | 10.40 |
| Dec 1, 1915 | 10.30 |
| Nov 1, 1915 | 10.30 |
| Oct 1, 1915 | 10.20 |
| Sep 1, 1915 | 10.10 |
| Aug 1, 1915 | 10.10 |
| Jul 1, 1915 | 10.10 |
| Jun 1, 1915 | 10.10 |
| May 1, 1915 | 10.10 |
| Apr 1, 1915 | 10.00 |
| Mar 1, 1915 | 9.90 |
| Feb 1, 1915 | 10.00 |
| Jan 1, 1915 | 10.10 |
| Dec 1, 1914 | 10.10 |
| Nov 1, 1914 | 10.20 |
| Oct 1, 1914 | 10.10 |
| Sep 1, 1914 | 10.20 |
| Aug 1, 1914 | 10.20 |
| Jul 1, 1914 | 10.00 |
| Jun 1, 1914 | 9.90 |
| May 1, 1914 | 9.90 |
| Apr 1, 1914 | 9.80 |
| Mar 1, 1914 | 9.90 |
| Feb 1, 1914 | 9.90 |
| Jan 1, 1914 | 10.00 |
| Dec 1, 1913 | 10.00 |
| Nov 1, 1913 | 10.10 |
| Oct 1, 1913 | 10.00 |
| Sep 1, 1913 | 10.00 |
| Aug 1, 1913 | 9.90 |
| Jul 1, 1913 | 9.90 |
| Jun 1, 1913 | 9.80 |
| May 1, 1913 | 9.70 |
| Apr 1, 1913 | 9.80 |
| Mar 1, 1913 | 9.80 |
| Feb 1, 1913 | 9.80 |
| Jan 1, 1913 | 9.80 |
| Dec 1, 1912 | 9.70 |
| Nov 1, 1912 | 9.80 |
| Oct 1, 1912 | 9.80 |
| Sep 1, 1912 | 9.80 |
| Aug 1, 1912 | 9.70 |
| Jul 1, 1912 | 9.61 |
| Jun 1, 1912 | 9.61 |
| May 1, 1912 | 9.70 |
| Apr 1, 1912 | 9.70 |
| Mar 1, 1912 | 9.42 |
| Feb 1, 1912 | 9.23 |
| Jan 1, 1912 | 9.13 |
| Dec 1, 1911 | 9.04 |
| Nov 1, 1911 | 9.13 |
| Oct 1, 1911 | 9.23 |
| Sep 1, 1911 | 9.23 |
| Aug 1, 1911 | 9.13 |
| Jul 1, 1911 | 8.85 |
| Jun 1, 1911 | 8.75 |
| May 1, 1911 | 8.75 |
| Apr 1, 1911 | 8.75 |
| Mar 1, 1911 | 9.04 |
| Feb 1, 1911 | 8.94 |
| Jan 1, 1911 | 9.23 |
| Dec 1, 1910 | 9.23 |
| Nov 1, 1910 | 9.23 |
| Oct 1, 1910 | 9.42 |
| Sep 1, 1910 | 9.70 |
| Aug 1, 1910 | 9.80 |
| Jul 1, 1910 | 9.90 |
| Jun 1, 1910 | 9.90 |
| May 1, 1910 | 9.99 |
| Apr 1, 1910 | 10.18 |
| Mar 1, 1910 | 10.09 |
| Feb 1, 1910 | 9.90 |
| Jan 1, 1910 | 9.90 |
| Dec 1, 1909 | 9.99 |
| Nov 1, 1909 | 9.90 |
| Oct 1, 1909 | 9.80 |
| Sep 1, 1909 | 9.61 |
| Aug 1, 1909 | 9.51 |
| Jul 1, 1909 | 9.42 |
| Jun 1, 1909 | 9.42 |
| May 1, 1909 | 9.32 |
| Apr 1, 1909 | 9.23 |
| Mar 1, 1909 | 9.04 |
| Feb 1, 1909 | 9.04 |
| Jan 1, 1909 | 8.94 |
| Dec 1, 1908 | 9.04 |
| Nov 1, 1908 | 8.94 |
| Oct 1, 1908 | 8.85 |
| Sep 1, 1908 | 8.75 |
| Aug 1, 1908 | 8.75 |
| Jul 1, 1908 | 8.75 |
| Jun 1, 1908 | 8.66 |
| May 1, 1908 | 8.66 |
| Apr 1, 1908 | 8.66 |
| Mar 1, 1908 | 8.56 |
| Feb 1, 1908 | 8.56 |
| Jan 1, 1908 | 8.66 |
| Dec 1, 1907 | 8.75 |
| Nov 1, 1907 | 8.94 |
| Oct 1, 1907 | 9.32 |
| Sep 1, 1907 | 9.23 |
| Aug 1, 1907 | 9.23 |
| Jul 1, 1907 | 9.23 |
| Jun 1, 1907 | 9.23 |
| May 1, 1907 | 9.13 |
| Apr 1, 1907 | 8.94 |
| Mar 1, 1907 | 8.94 |
| Feb 1, 1907 | 9.04 |
| Jan 1, 1907 | 8.85 |
| Dec 1, 1906 | 8.94 |
| Nov 1, 1906 | 8.85 |
| Oct 1, 1906 | 8.75 |
| Sep 1, 1906 | 8.56 |
| Aug 1, 1906 | 8.47 |
| Jul 1, 1906 | 8.28 |
| Jun 1, 1906 | 8.56 |
| May 1, 1906 | 8.56 |
| Apr 1, 1906 | 8.47 |
| Mar 1, 1906 | 8.47 |
| Feb 1, 1906 | 8.47 |
| Jan 1, 1906 | 8.47 |
| Dec 1, 1905 | 8.47 |
| Nov 1, 1905 | 8.37 |
| Oct 1, 1905 | 8.28 |
| Sep 1, 1905 | 8.28 |
| Aug 1, 1905 | 8.37 |
| Jul 1, 1905 | 8.28 |
| Jun 1, 1905 | 8.28 |
| May 1, 1905 | 8.28 |
| Apr 1, 1905 | 8.37 |
| Mar 1, 1905 | 8.37 |
| Feb 1, 1905 | 8.47 |
| Jan 1, 1905 | 8.47 |
| Dec 1, 1904 | 8.47 |
| Nov 1, 1904 | 8.47 |
| Oct 1, 1904 | 8.28 |
| Sep 1, 1904 | 8.28 |
| Aug 1, 1904 | 8.18 |
| Jul 1, 1904 | 8.09 |
| Jun 1, 1904 | 8.09 |
| May 1, 1904 | 8.09 |
| Apr 1, 1904 | 8.28 |
| Mar 1, 1904 | 8.37 |
| Feb 1, 1904 | 8.47 |
| Jan 1, 1904 | 8.28 |
| Dec 1, 1903 | 8.09 |
| Nov 1, 1903 | 8.09 |
| Oct 1, 1903 | 8.18 |
| Sep 1, 1903 | 8.28 |
| Aug 1, 1903 | 8.18 |
| Jul 1, 1903 | 8.18 |
| Jun 1, 1903 | 8.18 |
| May 1, 1903 | 8.18 |
| Apr 1, 1903 | 8.37 |
| Mar 1, 1903 | 8.37 |
| Feb 1, 1903 | 8.66 |
| Jan 1, 1903 | 8.66 |
| Dec 1, 1902 | 8.56 |
| Nov 1, 1902 | 8.47 |
| Oct 1, 1902 | 8.75 |
| Sep 1, 1902 | 8.18 |
| Aug 1, 1902 | 8.09 |
| Jul 1, 1902 | 8.18 |
| Jun 1, 1902 | 8.18 |
| May 1, 1902 | 8.09 |
| Apr 1, 1902 | 7.99 |
| Mar 1, 1902 | 7.90 |
| Feb 1, 1902 | 7.90 |
| Jan 1, 1902 | 7.90 |
| Dec 1, 1901 | 7.99 |
| Nov 1, 1901 | 7.90 |
| Oct 1, 1901 | 7.80 |
| Sep 1, 1901 | 7.80 |
| Aug 1, 1901 | 7.71 |
| Jul 1, 1901 | 7.61 |
| Jun 1, 1901 | 7.52 |
| May 1, 1901 | 7.52 |
| Apr 1, 1901 | 7.52 |
| Mar 1, 1901 | 7.61 |
| Feb 1, 1901 | 7.61 |
| Jan 1, 1901 | 7.71 |
| Dec 1, 1900 | 7.61 |
| Nov 1, 1900 | 7.71 |
| Oct 1, 1900 | 7.71 |
| Sep 1, 1900 | 7.80 |
| Aug 1, 1900 | 7.71 |
| Jul 1, 1900 | 7.80 |
| Jun 1, 1900 | 7.71 |
| May 1, 1900 | 7.80 |
| Apr 1, 1900 | 7.99 |
| Mar 1, 1900 | 7.99 |
| Feb 1, 1900 | 7.99 |
| Jan 1, 1900 | 7.90 |
| Dec 1, 1899 | 7.90 |
| Nov 1, 1899 | 7.80 |
| Oct 1, 1899 | 7.71 |
| Sep 1, 1899 | 7.61 |
| Aug 1, 1899 | 7.33 |
| Jul 1, 1899 | 7.23 |
| Jun 1, 1899 | 7.14 |
| May 1, 1899 | 7.04 |
| Apr 1, 1899 | 7.04 |
| Mar 1, 1899 | 6.95 |
| Feb 1, 1899 | 6.95 |
| Jan 1, 1899 | 6.76 |
| Dec 1, 1898 | 6.76 |
| Nov 1, 1898 | 6.66 |
| Oct 1, 1898 | 6.66 |
| Sep 1, 1898 | 6.66 |
| Aug 1, 1898 | 6.66 |
| Jul 1, 1898 | 6.66 |
| Jun 1, 1898 | 6.76 |
| May 1, 1898 | 7.23 |
| Apr 1, 1898 | 6.76 |
| Mar 1, 1898 | 6.76 |
| Feb 1, 1898 | 6.76 |
| Jan 1, 1898 | 6.66 |
| Dec 1, 1897 | 6.66 |
| Nov 1, 1897 | 6.66 |
| Oct 1, 1897 | 6.66 |
| Sep 1, 1897 | 6.76 |
| Aug 1, 1897 | 6.57 |
| Jul 1, 1897 | 6.28 |
| Jun 1, 1897 | 6.28 |
| May 1, 1897 | 6.28 |
| Apr 1, 1897 | 6.37 |
| Mar 1, 1897 | 6.47 |
| Feb 1, 1897 | 6.47 |
| Jan 1, 1897 | 6.47 |
| Dec 1, 1896 | 6.66 |
| Nov 1, 1896 | 6.66 |
| Oct 1, 1896 | 6.47 |
| Sep 1, 1896 | 6.28 |
| Aug 1, 1896 | 6.28 |
| Jul 1, 1896 | 6.28 |
| Jun 1, 1896 | 6.28 |
| May 1, 1896 | 6.37 |
| Apr 1, 1896 | 6.47 |
| Mar 1, 1896 | 6.57 |
| Feb 1, 1896 | 6.57 |
| Jan 1, 1896 | 6.66 |
| Dec 1, 1895 | 6.76 |
| Nov 1, 1895 | 6.85 |
| Oct 1, 1895 | 6.85 |
| Sep 1, 1895 | 6.85 |
| Aug 1, 1895 | 6.85 |
| Jul 1, 1895 | 6.95 |
| Jun 1, 1895 | 7.04 |
| May 1, 1895 | 6.95 |
| Apr 1, 1895 | 6.85 |
| Mar 1, 1895 | 6.57 |
| Feb 1, 1895 | 6.57 |
| Jan 1, 1895 | 6.57 |
| Dec 1, 1894 | 6.57 |
| Nov 1, 1894 | 6.66 |
| Oct 1, 1894 | 6.66 |
| Sep 1, 1894 | 6.85 |
| Aug 1, 1894 | 6.76 |
| Jul 1, 1894 | 6.57 |
| Jun 1, 1894 | 6.57 |
| May 1, 1894 | 6.57 |
| Apr 1, 1894 | 6.57 |
| Mar 1, 1894 | 6.57 |
| Feb 1, 1894 | 6.76 |
| Jan 1, 1894 | 6.85 |
| Dec 1, 1893 | 7.04 |
| Nov 1, 1893 | 7.14 |
| Oct 1, 1893 | 7.33 |
| Sep 1, 1893 | 7.23 |
| Aug 1, 1893 | 6.95 |
| Jul 1, 1893 | 7.23 |
| Jun 1, 1893 | 7.42 |
| May 1, 1893 | 7.61 |
| Apr 1, 1893 | 7.71 |
| Mar 1, 1893 | 7.80 |
| Feb 1, 1893 | 7.99 |
| Jan 1, 1893 | 7.90 |
| Dec 1, 1892 | 7.61 |
| Nov 1, 1892 | 7.52 |
| Oct 1, 1892 | 7.33 |
| Sep 1, 1892 | 7.33 |
| Aug 1, 1892 | 7.33 |
| Jul 1, 1892 | 7.23 |
| Jun 1, 1892 | 7.04 |
| May 1, 1892 | 7.04 |
| Apr 1, 1892 | 7.04 |
| Mar 1, 1892 | 7.14 |
| Feb 1, 1892 | 7.33 |
| Jan 1, 1892 | 7.33 |
| Dec 1, 1891 | 7.52 |
| Nov 1, 1891 | 7.52 |
| Oct 1, 1891 | 7.61 |
| Sep 1, 1891 | 7.61 |
| Aug 1, 1891 | 7.71 |
| Jul 1, 1891 | 7.71 |
| Jun 1, 1891 | 7.80 |
| May 1, 1891 | 7.99 |
| Apr 1, 1891 | 8.09 |
| Mar 1, 1891 | 7.99 |
| Feb 1, 1891 | 7.90 |
| Jan 1, 1891 | 7.80 |
| Dec 1, 1890 | 7.90 |
| Nov 1, 1890 | 7.90 |
| Oct 1, 1890 | 8.09 |
| Sep 1, 1890 | 8.09 |
| Aug 1, 1890 | 7.99 |
| Jul 1, 1890 | 7.71 |
| Jun 1, 1890 | 7.71 |
| May 1, 1890 | 7.71 |
| Apr 1, 1890 | 7.61 |
| Mar 1, 1890 | 7.61 |
| Feb 1, 1890 | 7.61 |
| Jan 1, 1890 | 7.61 |
| Dec 1, 1889 | 7.80 |
| Nov 1, 1889 | 7.71 |
| Oct 1, 1889 | 7.71 |
| Sep 1, 1889 | 7.71 |
| Aug 1, 1889 | 7.61 |
| Jul 1, 1889 | 7.61 |
| Jun 1, 1889 | 7.61 |
| May 1, 1889 | 7.61 |
| Apr 1, 1889 | 7.80 |
| Mar 1, 1889 | 7.80 |
| Feb 1, 1889 | 7.90 |
| Jan 1, 1889 | 7.99 |
| Dec 1, 1888 | 8.28 |
| Nov 1, 1888 | 8.28 |
| Oct 1, 1888 | 8.18 |
| Sep 1, 1888 | 8.09 |
| Aug 1, 1888 | 8.09 |
| Jul 1, 1888 | 8.09 |
| Jun 1, 1888 | 7.99 |
| May 1, 1888 | 8.09 |
| Apr 1, 1888 | 8.18 |
| Mar 1, 1888 | 8.28 |
| Feb 1, 1888 | 8.28 |
| Jan 1, 1888 | 8.37 |
| Dec 1, 1887 | 8.28 |
| Nov 1, 1887 | 8.09 |
| Oct 1, 1887 | 7.99 |
| Sep 1, 1887 | 7.90 |
| Aug 1, 1887 | 7.99 |
| Jul 1, 1887 | 7.90 |
| Jun 1, 1887 | 7.99 |
| May 1, 1887 | 8.09 |
| Apr 1, 1887 | 8.09 |
| Mar 1, 1887 | 8.09 |
| Feb 1, 1887 | 8.09 |
| Jan 1, 1887 | 7.99 |
| Dec 1, 1886 | 7.80 |
| Nov 1, 1886 | 7.71 |
| Oct 1, 1886 | 7.71 |
| Sep 1, 1886 | 7.71 |
| Aug 1, 1886 | 7.71 |
| Jul 1, 1886 | 7.61 |
| Jun 1, 1886 | 7.52 |
| May 1, 1886 | 7.61 |
| Apr 1, 1886 | 7.80 |
| Mar 1, 1886 | 7.90 |
| Feb 1, 1886 | 7.99 |
| Jan 1, 1886 | 7.99 |
| Dec 1, 1885 | 8.18 |
| Nov 1, 1885 | 7.99 |
| Oct 1, 1885 | 7.90 |
| Sep 1, 1885 | 7.90 |
| Aug 1, 1885 | 7.99 |
| Jul 1, 1885 | 7.99 |
| Jun 1, 1885 | 7.90 |
| May 1, 1885 | 8.09 |
| Apr 1, 1885 | 8.28 |
| Mar 1, 1885 | 8.18 |
| Feb 1, 1885 | 8.37 |
| Jan 1, 1885 | 8.28 |
| Dec 1, 1884 | 8.28 |
| Nov 1, 1884 | 8.37 |
| Oct 1, 1884 | 8.56 |
| Sep 1, 1884 | 8.66 |
| Aug 1, 1884 | 8.75 |
| Jul 1, 1884 | 8.75 |
| Jun 1, 1884 | 8.85 |
| May 1, 1884 | 8.85 |
| Apr 1, 1884 | 9.04 |
| Mar 1, 1884 | 9.23 |
| Feb 1, 1884 | 9.23 |
| Jan 1, 1884 | 9.23 |
| Dec 1, 1883 | 9.23 |
| Nov 1, 1883 | 9.13 |
| Oct 1, 1883 | 9.23 |
| Sep 1, 1883 | 9.23 |
| Aug 1, 1883 | 9.32 |
| Jul 1, 1883 | 9.32 |
| Jun 1, 1883 | 9.51 |
| May 1, 1883 | 9.80 |
| Apr 1, 1883 | 9.90 |
| Mar 1, 1883 | 9.99 |
| Feb 1, 1883 | 10.09 |
| Jan 1, 1883 | 9.99 |
| Dec 1, 1882 | 9.99 |
| Nov 1, 1882 | 10.09 |
| Oct 1, 1882 | 10.18 |
| Sep 1, 1882 | 10.28 |
| Aug 1, 1882 | 10.56 |
| Jul 1, 1882 | 10.47 |
| Jun 1, 1882 | 10.56 |
| May 1, 1882 | 10.47 |
| Apr 1, 1882 | 10.37 |
| Mar 1, 1882 | 10.28 |
| Feb 1, 1882 | 10.28 |
| Jan 1, 1882 | 10.18 |
| Dec 1, 1881 | 10.18 |
| Nov 1, 1881 | 10.18 |
| Oct 1, 1881 | 10.28 |
| Sep 1, 1881 | 10.18 |
| Aug 1, 1881 | 9.80 |
| Jul 1, 1881 | 9.61 |
| Jun 1, 1881 | 9.51 |
| May 1, 1881 | 9.51 |
| Apr 1, 1881 | 9.61 |
| Mar 1, 1881 | 9.51 |
| Feb 1, 1881 | 9.51 |
| Jan 1, 1881 | 9.42 |
| Dec 1, 1880 | 9.51 |
| Nov 1, 1880 | 9.42 |
| Oct 1, 1880 | 9.32 |
| Sep 1, 1880 | 9.32 |
| Aug 1, 1880 | 9.23 |
| Jul 1, 1880 | 9.23 |
| Jun 1, 1880 | 9.23 |
| May 1, 1880 | 9.42 |
| Apr 1, 1880 | 9.70 |
| Mar 1, 1880 | 10.09 |
| Feb 1, 1880 | 9.99 |
| Jan 1, 1880 | 9.99 |
| Dec 1, 1879 | 9.70 |
| Nov 1, 1879 | 9.42 |
| Oct 1, 1879 | 8.94 |
| Sep 1, 1879 | 8.47 |
| Aug 1, 1879 | 8.18 |
| Jul 1, 1879 | 8.18 |
| Jun 1, 1879 | 8.09 |
| May 1, 1879 | 8.18 |
| Apr 1, 1879 | 8.18 |
| Mar 1, 1879 | 8.28 |
| Feb 1, 1879 | 8.37 |
| Jan 1, 1879 | 8.28 |
| Dec 1, 1878 | 8.18 |
| Nov 1, 1878 | 8.37 |
| Oct 1, 1878 | 8.47 |
| Sep 1, 1878 | 8.56 |
| Aug 1, 1878 | 8.56 |
| Jul 1, 1878 | 8.47 |
| Jun 1, 1878 | 8.37 |
| May 1, 1878 | 8.56 |
| Apr 1, 1878 | 8.85 |
| Mar 1, 1878 | 8.94 |
| Feb 1, 1878 | 9.13 |
| Jan 1, 1878 | 9.23 |
| Dec 1, 1877 | 9.51 |
| Nov 1, 1877 | 9.51 |
| Oct 1, 1877 | 9.70 |
| Sep 1, 1877 | 9.70 |
| Aug 1, 1877 | 9.80 |
| Jul 1, 1877 | 10.18 |
| Jun 1, 1877 | 10.09 |
| May 1, 1877 | 10.66 |
| Apr 1, 1877 | 10.47 |
| Mar 1, 1877 | 10.18 |
| Feb 1, 1877 | 10.66 |
| Jan 1, 1877 | 10.94 |
| Dec 1, 1876 | 10.75 |
| Nov 1, 1876 | 10.56 |
| Oct 1, 1876 | 10.47 |
| Sep 1, 1876 | 10.28 |
| Aug 1, 1876 | 10.18 |
| Jul 1, 1876 | 10.09 |
| Jun 1, 1876 | 10.09 |
| May 1, 1876 | 10.37 |
| Apr 1, 1876 | 10.75 |
| Mar 1, 1876 | 10.85 |
| Feb 1, 1876 | 10.85 |
| Jan 1, 1876 | 10.85 |
| Dec 1, 1875 | 10.94 |
| Nov 1, 1875 | 11.04 |
| Oct 1, 1875 | 11.13 |
| Sep 1, 1875 | 11.13 |
| Aug 1, 1875 | 11.23 |
| Jul 1, 1875 | 11.13 |
| Jun 1, 1875 | 11.13 |
| May 1, 1875 | 11.32 |
| Apr 1, 1875 | 11.61 |
| Mar 1, 1875 | 11.51 |
| Feb 1, 1875 | 11.51 |
| Jan 1, 1875 | 11.51 |
| Dec 1, 1874 | 11.51 |
| Nov 1, 1874 | 11.51 |
| Oct 1, 1874 | 11.61 |
| Sep 1, 1874 | 11.80 |
| Aug 1, 1874 | 11.80 |
| Jul 1, 1874 | 11.89 |
| Jun 1, 1874 | 11.80 |
| May 1, 1874 | 12.08 |
| Apr 1, 1874 | 12.18 |
| Mar 1, 1874 | 12.37 |
| Feb 1, 1874 | 12.37 |
| Jan 1, 1874 | 12.37 |
| Dec 1, 1873 | 12.18 |
| Nov 1, 1873 | 11.89 |
| Oct 1, 1873 | 12.27 |
| Sep 1, 1873 | 12.56 |
| Aug 1, 1873 | 12.56 |
| Jul 1, 1873 | 12.56 |
| Jun 1, 1873 | 12.56 |
| May 1, 1873 | 12.94 |
| Apr 1, 1873 | 13.23 |
| Mar 1, 1873 | 13.23 |
| Feb 1, 1873 | 13.23 |
| Jan 1, 1873 | 12.94 |
| Dec 1, 1872 | 12.94 |
| Nov 1, 1872 | 13.13 |
| Oct 1, 1872 | 12.75 |
| Sep 1, 1872 | 13.03 |
| Aug 1, 1872 | 12.94 |
| Jul 1, 1872 | 12.84 |
| Jun 1, 1872 | 13.03 |
| May 1, 1872 | 13.13 |
| Apr 1, 1872 | 13.13 |
| Mar 1, 1872 | 12.84 |
| Feb 1, 1872 | 12.65 |
| Jan 1, 1872 | 12.65 |
| Dec 1, 1871 | 12.65 |
| Nov 1, 1871 | 12.37 |
| Oct 1, 1871 | 12.37 |
| Sep 1, 1871 | 12.18 |
| Aug 1, 1871 | 11.89 |
| Jul 1, 1871 | 12.08 |
| Jun 1, 1871 | 12.08 |
| May 1, 1871 | 12.27 |
| Apr 1, 1871 | 12.56 |
| Mar 1, 1871 | 13.03 |
| Feb 1, 1871 | 12.84 |
| Jan 1, 1871 | 12.46 |
CPI for all Urban Consumers (CPI-U). Not seasonally adjusted.
Data courtesy US Bureau of Labor Statistics.
See US Inflation Rate for year over year change.