| Date | Value |
|---|---|
| Dec 1, 2023 | 5.05% |
| Jan 1, 2023 | 4.69% |
| Jan 1, 2022 | 0.55% |
| Jan 1, 2021 | 0.10% |
| Jan 1, 2020 | 1.53% |
| Jan 1, 2019 | 2.58% |
| Jan 1, 2018 | 1.80% |
| Jan 1, 2017 | 0.83% |
| Jan 1, 2016 | 0.54% |
| Jan 1, 2015 | 0.20% |
| Jan 1, 2014 | 0.12% |
| Jan 1, 2013 | 0.15% |
| Jan 1, 2012 | 0.12% |
| Jan 1, 2011 | 0.27% |
| Jan 1, 2010 | 0.35% |
| Jan 1, 2009 | 0.44% |
| Jan 1, 2008 | 2.71% |
| Jan 1, 2007 | 5.06% |
| Jan 1, 2006 | 4.45% |
| Jan 1, 2005 | 2.86% |
| Jan 1, 2004 | 1.24% |
| Jan 1, 2003 | 1.36% |
| Jan 1, 2002 | 2.16% |
| Jan 1, 2001 | 4.81% |
| Jan 1, 2000 | 6.12% |
| Jan 1, 1999 | 4.51% |
| Jan 1, 1998 | 5.24% |
| Jan 1, 1997 | 5.61% |
| Jan 1, 1996 | 5.09% |
| Jan 1, 1995 | 7.05% |
| Jan 1, 1994 | 3.54% |
| Jan 1, 1993 | 3.50% |
| Jan 1, 1992 | 4.15% |
| Jan 1, 1991 | 6.64% |
| Jan 1, 1990 | 7.92% |