| Prior to September 12, |
1980
|
7.00%
|
| September 12, 1980 – September 10, |
1981
|
10.00%
|
| September 11, 1981 – December 31, |
1987
|
12.00%
|
| January 1, 1988 – December 31, |
1988
|
9.75%
|
| January 1, 1989 – December 31, |
1989
|
11.50%
|
| January 1, 1990 – December 31, |
1990
|
11.50%
|
| January 1, 1991 – December 31, |
1991
|
11.00%
|
| January 1, 1992 – December 31, |
1992
|
9.00%
|
| January 1, 1993 – December 31, |
1993
|
7.00%
|
| January 1, 1994 – December 31, |
1994
|
7.00%
|
| January 1, 1995 – December 31, |
1995
|
8.75%
|
| January 1, 1996 – December 31, |
1996
|
9.75%
|
| January 1, 1997 – July 31, |
1997
|
9.25%
|
| August 1, 1997 – December 31, |
1997
|
7.90%
|
| January 1, 1998 – December 31, |
1998
|
7.30%
|
| January 1, 1999 – December 31, |
1999
|
6.73%
|
| January 1, 2000 – December 31, |
2000
|
7.285%
|
| January 1, 2001 – December 31, |
2001
|
8.241%
|
| January 1, 2002 – December 31, |
2002
|
5.75%
|
|
January 1, 2003 – December 31,
|
2003
|
4.5%
|
|
January 1, 2004 – December 31,
|
2004
|
5.25%
|
|
January 1, 2005 – December 31,
|
2005
|
6.00%
|
|
January 1, 2006 – December 31,
|
2006
|
8.00%
|
|
January 1, 2007 – December 31,
|
2007
|
9.50%
|
|
January 1, 2008 – December 31,
|
2008
|
8.50%
|
|
January 1, 2009 – December 31,
|
2009
|
5.50%
|
|
January 1, 2010 – December 31,
|
2010
|
3.75%
|
|
January 1, 2011 – December 31,
|
2011
|
4.00%
|
|
January 1, 2012 – December 31,
|
2012
|
4.00%
|
|
January 1, 2013 – December 31,
|
2013
|
4.00%
|
|
January 1, 2014 – December 31,
|
2014
|
4.00%
|
|
January 1, 2015 – December 31,
|
2015
|
|
|
January 1, 2016 – December 31,
|
2016
|