| Date Filed | Type | Description |
| 03/12/2007 |
10-K/A
| Annual Report for the period ended December 31, 2006 [amend] |
| 03/01/2007 |
10-K
| Annual Report for the period ended December 31, 2006 |
| 03/23/2006 |
10-K/A
| Annual Report for the period ended December 31, 2005 [amend] |
| 03/15/2006 |
10-K
| Annual Report for the period ended December 31, 2005 |
| 03/15/2005 |
10-K
| Annual Report for the period ended December 31, 2004 |
| 03/12/2004 |
10-K
| Annual Report for the period ended December 31, 2003 |
| 03/28/2003 |
10-K
| Annual Report for the period ended December 31, 2002 |
| 07/12/2002 |
10-K/A
| Annual Report for the period ended December 31, 2001 [amend] |
| 04/01/2002 |
10-K
| Annual Report for the period ended December 31, 2001 |
| 03/19/2001 |
10-K
| Annual Report for the period ended December 31, 2000 |
| 03/30/2000 |
10-K
| Annual Report for the period ended December 31, 1999 |
| 03/30/1999 |
10-K
| Annual Report for the period ended December 31, 1998 |
| 04/23/1998 |
10-K/A
| Annual Report for the period ended December 31, 1997 [amend] |
| 03/31/1998 |
10-K
| Annual Report for the period ended December 31, 1997 |
| 04/30/1997 |
10-K/A
| Annual Report for the period ended December 31, 1996 [amend] |
| 03/28/1997 |
10-K
| Annual Report for the period ended December 31, 1996 |
| 05/15/1996 |
10-K/A
| Annual Report for the period ended December 31, 1995 [amend] |
| 05/15/1996 |
10-K/A
| Annual Report for the period ended December 31, 1995 [amend] |
| 04/29/1996 |
10-K/A
| Annual Report for the period ended December 31, 1995 [amend] |
| 03/25/1996 |
10-K
| Annual Report for the period ended December 31, 1995 |
| 04/21/1995 |
10-K/A
| Annual Report for the period ended December 31, 1994 [amend] |
| 04/05/1995 |
10-K/A
| Annual Report for the period ended December 31, 1994 [amend] |
| 03/27/1995 |
10-K
| Annual Report for the period ended December 31, 1994 |