| Date Filed | Type | Description |
| 02/18/2015 |
10-K
| Annual Report for the period ended December 31, 2014 |
| 02/25/2014 |
10-K
| Annual Report for the period ended December 31, 2013 |
| 02/26/2013 |
10-K
| Annual Report for the period ended December 31, 2012 |
| 02/28/2012 |
10-K
| Annual Report for the period ended December 31, 2011 |
| 02/28/2011 |
10-K
| Annual Report for the period ended December 31, 2010 |
| 02/26/2010 |
10-K
| Annual Report for the period ended December 31, 2009 |
| 02/27/2009 |
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 |
| 03/01/2007 |
10-K
| Annual Report for the period ended December 31, 2006 |
| 03/06/2006 |
10-K
| Annual Report for the period ended December 31, 2005 |
| 03/09/2005 |
10-K
| Annual Report for the period ended December 31, 2004 |
| 03/05/2004 |
10-K
| Annual Report for the period ended December 31, 2003 |
| 03/14/2003 |
10-K
| Annual Report for the period ended December 31, 2002 |
| 03/01/2002 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
| 03/23/2001 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
| 03/16/2000 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
| 03/24/1999 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
| 03/13/1998 |
10-K
| Annual Report for the period ended December 31, 1997 |
| 03/28/1997 |
10-K
| Annual Report for the period ended December 31, 1996 |
| 03/28/1996 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
| 03/23/1995 |
10-K
| Annual Report for the period ended December 31, 1994 |
| 03/28/1994 |
10-K
| Annual Report for the period ended December 31, 1993 |