| Period in Effect |
% |
| June 1, 2010 |
7.75 |
| April 30, 2010 May 31, 2010 |
8 |
| March 29, 2010 April 29, 2010 |
8.25 |
| February 24, 2010 March 28, 2010 |
8.5 |
| December 28, 2009 February 23, 2010 |
8.75 |
| November 25, 2009 December 27, 2009 |
9 |
| October 30, 2009 November 24, 2009 |
9.5 |
| September 30, 2009 October 29, 2009 |
10 |
| September 15, 2009 September 29, 2009 |
10.5 |
| August 10, 2009 September 14, 2009 |
10.75 |
| July 13, 2009 August 9, 2009 |
11 |
| June 5, 2009 July 12, 2009 |
11.5 |
| May 14, 2009 June 4, 2009 |
12 |
| April 24, 2009 May 13, 2009 |
12.5 |
| December 1, 2008 April 23, 2009 |
13 |
| November 12, 2008 November 30, 2008 |
12 |
| July 14, 2008 November 11, 2008 |
11 |
| June 10, 2008 July
13, 2008 |
10.75 |
| April 29, 2008 June
9, 2008 |
10.5 |
| February 4, 2008 April 28, 2008 |
10.25 |
| June 19, 2007 February
3, 2008 |
10 |
| January 29, 2007 June 18, 2007 |
10.5 |
| October 23, 2006 January 28, 2007 |
11 |
|
June 26, 2006 October 22, 2006 |
11.5 |
| December 26, 2005 June 25, 2006 |
12 |
| June 15, 2004 December 25, 2005 |
13 |
| January 15, 2004 June 14, 2004 |
14 |
| June 21, 2003 January 14, 2004 |
16 |
| February 17, 2003 June 20, 2003 |
18 |
| August 7, 2002 February 16, 2003 |
21 |
| April 9, 2002 August 6, 2002 |
23 |
| November 4, 2000 April 8, 2002 |
25 |
| July 10, 2000 November 3, 2000 |
28 |
| March 21, 2000 July 9, 2000 |
33 |
| March 7, 2000 March 20, 2000 |
38 |
| January 24, 2000 March 6, 2000 |
45 |
| June 10, 1999 January 23, 2000 |
55 |
| July 24, 1998 June 9, 1999 |
60 |
| June 29, 1998 July 23, 1998 |
80 |
| June 5, 1998 June 28, 1998 |
60 |
| May 27, 1998 June 4, 1998 |
150 |
| May 19, 1998 May 26, 1998 |
50 |
| March 16, 1998 May 18, 1998 |
30 |
| March 2, 1998 March 15, 1998 |
36 |
| February 17, 1998 March 1, 1998 |
39 |
| February 2, 1998 February 16, 1998 |
42 |
| November 11, 1997 February 1, 1998 |
28 |
| October 6, 1997 November 10, 1997 |
21 |
| June 16, 1997 October 5, 1997 |
24 |
| April 28, 1997 June 15, 1997 |
36 |
| February 10, 1997 April 27, 1997 |
42 |
| December 2, 1996 February 9, 1997 |
48 |
| October 21, 1996 December 1, 1996 |
60 |
| August 19, 1996 October 20, 1996 |
80 |
| July 24, 1996 August 18, 1996 |
110 |
| February 10, 1996 July 23, 1996 |
120 |
| December 1, 1995 February 9, 1996 |
160 |
| October 24, 1995 November 30, 1995 |
170 |
| June 19, 1995 October 23, 1995 |
180 |
| May 16, 1995 June 18, 1995 |
195 |
| January 6, 1995 May 15, 1995 |
200 |
| November 17, 1994 January 5, 1995 |
180 |
| October 12, 1994 November 16, 1994 |
170 |
| August 23, 1994 October 11, 1994 |
130 |
| August 1, 1994 August 22, 1994 |
150 |
| June 30, 1994 July 31, 1994 |
155 |
| June 22, 1994 June 29, 1994 |
170 |
| June 2, 1994 June 21, 1994 |
185 |
| May 17, 1994 June 1, 1994 |
200 |
| April 29, 1994 May 16, 1994 |
205 |
| October 15, 1993 April 28, 1994 |
210 |
| October 15, 1993 April 28, 1994 |
210 |
| September 23, 1993 October 14, 1993 |
180 |
| July 15, 1993 September 22, 1993 |
170 |
| June 29, 1993 July 14, 1993 |
140 |
| June 22, 1993 June 28, 1993 |
120 |
| June 2, 1993 June 21, 1993 |
110 |
| March 30, 1993 June 1, 1993 |
100 |
| May 23, 1992 March 29, 1993 |
80 |
| April 10, 1992 May 22, 1992 |
50 |
| January 1, 1992 April 9, 1992 |
20 |