| Date Filed | Type | Description |
| 02/23/2007 |
10-K
| Annual Report for the period ended December 31, 2006 |
| 02/24/2006 |
10-K
| Annual Report for the period ended December 31, 2005 |
| 02/28/2005 |
10-K
| Annual Report for the period ended December 31, 2004 |
| 03/15/2004 |
10-K
| Annual Report for the period ended December 31, 2003 |
| 03/03/2003 |
10-K
| Annual Report for the period ended December 31, 2002 |
| 03/28/2002 |
10-K
| Annual Report for the period ended December 31, 2001 |
| 03/23/2001 |
10-K
| Annual Report for the period ended December 31, 2000 |
| 03/15/2000 |
10-K
| Annual Report for the period ended December 31, 1999 |
| 03/31/1999 |
10-K
| Annual Report for the period ended December 31, 1998 |
| 03/05/1998 |
10-K
| Annual Report for the period ended December 31, 1997 |
| 08/18/1997 |
10-K405/A
| Form 10-K405/A - Annual report [Sections 13 and 15(d), S-K Item 405] [Amend] |
| 03/27/1997 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
| 03/28/1996 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
| 03/17/1995 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
| 12/09/1994 |
10-K/A
| Annual Report for the period ended December 31, 1993 [amend] |
| 12/09/1994 |
10-K/A
| Annual Report for the period ended December 31, 1993 [amend] |
| 03/25/1994 |
10-K
| Annual Report for the period ended December 31, 1993 |