Date Value Value
Dec 2, 2016 2.20%
Dec 1, 2016 2.23%
Nov 1, 2016 1.93%
Oct 1, 2016 1.56%
Sep 1, 2016 1.46%
Aug 1, 2016 1.40%
Jul 1, 2016 1.33%
Jun 1, 2016 1.44%
May 1, 2016 1.60%
Apr 1, 2016 1.57%
Mar 1, 2016 1.68%
Feb 1, 2016 1.53%
Jan 1, 2016 1.85%
Dec 1, 2015 2.04%
Nov 1, 2015 2.02%
Oct 1, 2015 1.76%
Sep 1, 2015 1.88%
Aug 1, 2015 1.91%
Jul 1, 2015 2.04%
Jun 1, 2015 2.10%
May 1, 2015 1.93%
Apr 1, 2015 1.69%
Mar 1, 2015 1.84%
Feb 1, 2015 1.79%
Jan 1, 2015 1.67%
Dec 1, 2014 1.98%
Nov 1, 2014 2.04%
Oct 1, 2014 1.98%
Sep 1, 2014 2.22%
Aug 1, 2014 2.08%
Jul 1, 2014 2.17%
Jun 1, 2014 2.19%
May 1, 2014 2.12%
Apr 1, 2014 2.27%
Mar 1, 2014 2.23%
Feb 1, 2014 2.15%
Jan 1, 2014 2.29%
Dec 1, 2013 2.29%
Nov 1, 2013 2.07%
Oct 1, 2013 1.99%
Sep 1, 2013 2.22%
Aug 1, 2013 2.15%
Jul 1, 2013 1.99%
Jun 1, 2013 1.71%
May 1, 2013 1.31%
Apr 1, 2013 1.15%
Mar 1, 2013 1.32%
Feb 1, 2013 1.35%
Jan 1, 2013 1.30%
Dec 1, 2012 1.13%
Nov 1, 2012 1.08%
Oct 1, 2012 1.15%
Sep 1, 2012 1.12%
Aug 1, 2012 1.14%
Jul 1, 2012 0.98%
Jun 1, 2012 1.08%
May 1, 2012 1.21%
Apr 1, 2012 1.43%
Mar 1, 2012 1.56%
Feb 1, 2012 1.37%
Jan 1, 2012 1.38%
Dec 1, 2011 1.43%
Nov 1, 2011 1.45%
Oct 1, 2011 1.62%
Sep 1, 2011 1.42%
Aug 1, 2011 1.63%
Jul 1, 2011 2.28%
Jun 1, 2011 2.29%
May 1, 2011 2.51%
Apr 1, 2011 2.84%
Mar 1, 2011 2.80%
Feb 1, 2011 2.96%
Jan 1, 2011 2.72%
Dec 1, 2010 2.66%
Nov 1, 2010 2.02%
Oct 1, 2010 1.85%
Sep 1, 2010 2.05%
Aug 1, 2010 2.10%
Jul 1, 2010 2.43%
Jun 1, 2010 2.66%
May 1, 2010 2.86%
Apr 1, 2010 3.28%
Mar 1, 2010 3.16%
Feb 1, 2010 3.12%
Jan 1, 2010 3.21%
Dec 1, 2009 3.07%
Nov 1, 2009 2.92%
Oct 1, 2009 2.96%
Sep 1, 2009 3.02%
Aug 1, 2009 3.21%
Jul 1, 2009 3.14%
Jun 1, 2009 3.36%
May 1, 2009 2.81%
Apr 1, 2009 2.47%
Mar 1, 2009 2.42%
Feb 1, 2009 2.30%
Jan 1, 2009 1.98%
Dec 1, 2008 1.89%
Nov 1, 2008 2.82%
Oct 1, 2008 3.19%
Sep 1, 2008 3.25%
Aug 1, 2008 3.46%
Jul 1, 2008 3.60%
Jun 1, 2008 3.73%
May 1, 2008 3.46%
Apr 1, 2008 3.19%
Mar 1, 2008 2.93%
Feb 1, 2008 3.21%
Jan 1, 2008 3.31%
Dec 1, 2007 3.74%
Nov 1, 2007 3.87%
Oct 1, 2007 4.33%
Sep 1, 2007 4.33%
Aug 1, 2007 4.53%
Jul 1, 2007 4.93%
Jun 1, 2007 5.05%
May 1, 2007 4.69%
Apr 1, 2007 4.62%
Mar 1, 2007 4.50%
Feb 1, 2007 4.71%
Jan 1, 2007 4.75%
Dec 1, 2006 4.54%
Nov 1, 2006 4.58%
Oct 1, 2006 4.69%
Sep 1, 2006 4.68%
Aug 1, 2006 4.83%
Jul 1, 2006 5.05%
Jun 1, 2006 5.08%
May 1, 2006 5.03%
Apr 1, 2006 4.94%
Mar 1, 2006 4.71%
Feb 1, 2006 4.56%
Jan 1, 2006 4.36%
Dec 1, 2005 4.41%
Nov 1, 2005 4.48%
Oct 1, 2005 4.38%
Sep 1, 2005 4.08%
Aug 1, 2005 4.18%
Jul 1, 2005 4.06%
Jun 1, 2005 3.86%
May 1, 2005 3.94%
Apr 1, 2005 4.16%
Mar 1, 2005 4.33%
Feb 1, 2005 3.97%
Jan 1, 2005 3.97%
Dec 1, 2004 3.93%
Nov 1, 2004 3.88%
Oct 1, 2004 3.75%
Sep 1, 2004 3.75%
Aug 1, 2004 3.90%
Jul 1, 2004 4.11%
Jun 1, 2004 4.35%
May 1, 2004 4.31%
Apr 1, 2004 3.89%
Mar 1, 2004 3.31%
Feb 1, 2004 3.59%
Jan 1, 2004 3.65%
Dec 1, 2003 3.79%
Nov 1, 2003 3.81%
Oct 1, 2003 3.75%
Sep 1, 2003 3.74%
Aug 1, 2003 3.96%
Jul 1, 2003 3.45%
Jun 1, 2003 2.84%
May 1, 2003 3.07%
Apr 1, 2003 3.47%
Mar 1, 2003 3.34%
Feb 1, 2003 3.45%
Jan 1, 2003 3.60%
Dec 1, 2002 3.63%
Nov 1, 2002 3.64%
Oct 1, 2002 3.54%
Sep 1, 2002 3.50%
Aug 1, 2002 3.87%
Jul 1, 2002 4.30%
Jun 1, 2002 4.60%
May 1, 2002 4.90%
Apr 1, 2002 5.02%
Mar 1, 2002 5.14%
Feb 1, 2002 4.71%
Jan 1, 2002 4.79%
Dec 1, 2001 4.86%
Nov 1, 2001 4.42%
Oct 1, 2001 4.31%
Sep 1, 2001 4.51%
Aug 1, 2001 4.84%
Jul 1, 2001 5.06%
Jun 1, 2001 5.14%
May 1, 2001 5.24%
Apr 1, 2001 5.03%
Mar 1, 2001 4.88%
Feb 1, 2001 5.10%
Jan 1, 2001 5.13%
Dec 1, 2000 5.28%
Nov 1, 2000 5.78%
Oct 1, 2000 5.84%
Sep 1, 2000 5.98%
Aug 1, 2000 6.05%
Jul 1, 2000 6.22%
Jun 1, 2000 6.33%
May 1, 2000 6.69%
Apr 1, 2000 6.27%
Mar 1, 2000 6.51%
Feb 1, 2000 6.72%
Jan 1, 2000 6.70%
Dec 1, 1999 6.38%
Nov 1, 1999 6.17%
Oct 1, 1999 6.33%
Sep 1, 1999 6.12%
Aug 1, 1999 6.15%
Jul 1, 1999 5.94%
Jun 1, 1999 6.05%
May 1, 1999 5.64%
Apr 1, 1999 5.28%
Mar 1, 1999 5.36%
Feb 1, 1999 5.10%
Jan 1, 1999 4.80%
Dec 1, 1998 4.65%
Nov 1, 1998 4.78%
Oct 1, 1998 4.46%
Sep 1, 1998 4.76%
Aug 1, 1998 5.36%
Jul 1, 1998 5.52%
Jun 1, 1998 5.56%
May 1, 1998 5.72%
Apr 1, 1998 5.70%
Mar 1, 1998 5.71%
Feb 1, 1998 5.60%
Jan 1, 1998 5.53%
Dec 1, 1997 5.83%
Nov 1, 1997 5.90%
Oct 1, 1997 6.05%
Sep 1, 1997 6.20%
Aug 1, 1997 6.29%
Jul 1, 1997 6.20%
Jun 1, 1997 6.46%
May 1, 1997 6.66%
Apr 1, 1997 6.86%
Mar 1, 1997 6.65%
Feb 1, 1997 6.32%
Jan 1, 1997 6.47%
Dec 1, 1996 6.20%
Nov 1, 1996 6.10%
Oct 1, 1996 6.42%
Sep 1, 1996 6.73%
Aug 1, 1996 6.51%
Jul 1, 1996 6.76%
Jun 1, 1996 6.83%
May 1, 1996 6.66%
Apr 1, 1996 6.48%
Mar 1, 1996 6.19%
Feb 1, 1996 5.64%
Jan 1, 1996 5.54%
Dec 1, 1995 5.63%
Nov 1, 1995 5.83%
Oct 1, 1995 5.97%
Sep 1, 1995 6.13%
Aug 1, 1995 6.41%
Jul 1, 1995 6.20%
Jun 1, 1995 6.05%
May 1, 1995 6.50%
Apr 1, 1995 6.95%
Mar 1, 1995 7.14%
Feb 1, 1995 7.44%
Jan 1, 1995 7.79%
Dec 1, 1994 7.80%
Nov 1, 1994 7.83%
Oct 1, 1994 7.58%
Sep 1, 1994 7.28%
Aug 1, 1994 7.06%
Jul 1, 1994 7.12%
Jun 1, 1994 6.91%
May 1, 1994 7.01%
Apr 1, 1994 6.80%
Mar 1, 1994 6.28%
Feb 1, 1994 5.72%
Jan 1, 1994 5.43%
Dec 1, 1993 5.48%
Nov 1, 1993 5.45%
Oct 1, 1993 5.05%
Sep 1, 1993 5.08%
Aug 1, 1993 5.35%
Jul 1, 1993 5.48%
Jun 1, 1993 5.61%
May 1, 1993 5.66%
Apr 1, 1993 5.59%
Mar 1, 1993 5.66%
Feb 1, 1993 5.87%
Jan 1, 1993 6.26%
Dec 1, 1992 6.46%
Nov 1, 1992 6.49%
Oct 1, 1992 6.15%
Sep 1, 1992 5.96%
Aug 1, 1992 6.12%
Jul 1, 1992 6.36%
Jun 1, 1992 6.90%
May 1, 1992 7.06%
Apr 1, 1992 7.15%
Mar 1, 1992 7.26%
Feb 1, 1992 6.96%
Jan 1, 1992 6.70%
Dec 1, 1991 6.69%
Nov 1, 1991 7.06%
Oct 1, 1991 7.25%
Sep 1, 1991 7.48%
Aug 1, 1991 7.74%
Jul 1, 1991 8.15%
Jun 1, 1991 8.17%
May 1, 1991 7.94%
Apr 1, 1991 7.92%
Mar 1, 1991 8.00%
Feb 1, 1991 7.73%
Jan 1, 1991 7.97%
Dec 1, 1990 8.00%
Nov 1, 1990 8.28%
Oct 1, 1990 8.59%
Sep 1, 1990 8.79%
Aug 1, 1990 8.64%
Jul 1, 1990 8.46%
Jun 1, 1990 8.52%
May 1, 1990 8.78%
Apr 1, 1990 8.81%
Mar 1, 1990 8.65%
Feb 1, 1990 8.48%
Jan 1, 1990 8.20%