| Date Filed | Type | Description |
| 02/24/2011 |
10-K
| Annual Report for the period ended December 31, 2010 |
| 02/25/2010 |
10-K
| Annual Report for the period ended December 31, 2009 |
| 02/26/2009 |
10-K
| Annual Report for the period ended December 31, 2008 |
| 02/28/2008 |
10-K
| Annual Report for the period ended December 31, 2007 |
| 02/28/2007 |
10-K
| Annual Report for the period ended December 31, 2006 |
| 03/01/2006 |
10-K
| Annual Report for the period ended December 31, 2005 |
| 03/03/2005 |
10-K
| Annual Report for the period ended December 31, 2004 |
| 10/13/2004 |
10-K/A
| Annual Report for the period ended December 31, 2003 [amend] |
| 03/09/2004 |
10-K
| Annual Report for the period ended December 31, 2003 |
| 10/31/2003 |
10-K/A
| Annual Report for the period ended December 31, 2002 [amend] |
| 03/04/2003 |
10-K
| Annual Report for the period ended December 31, 2002 |
| 03/01/2002 |
10-K
| Annual Report for the period ended December 31, 2001 |
| 03/07/2001 |
10-K
| Annual Report for the period ended December 31, 2000 |
| 02/28/2000 |
10-K
| Annual Report for the period ended December 31, 1999 |
| 03/01/1999 |
10-K
| Annual Report for the period ended December 31, 1998 |
| 02/26/1998 |
10-K
| Annual Report for the period ended December 31, 1997 |
| 03/07/1997 |
10-K
| Annual Report for the period ended December 31, 1996 |
| 03/14/1996 |
10-K
| Annual Report for the period ended December 31, 1995 |
| 03/17/1995 |
10-K
| Annual Report for the period ended December 31, 1994 |
| 02/24/1994 |
10-K
| Annual Report for the period ended December 31, 1993 |