| Date Filed | Type | Description |
| 02/27/2017 |
10-K
| Annual Report for the period ended December 31, 2016 |
| 02/29/2016 |
10-K
| Annual Report for the period ended December 31, 2015 |
| 02/23/2015 |
10-K
| Annual Report for the period ended December 31, 2014 |
| 02/24/2014 |
10-K
| Annual Report for the period ended December 31, 2013 |
| 02/22/2013 |
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 |
| 03/07/2011 |
10-K
| Annual Report for the period ended December 31, 2010 |
| 03/05/2010 |
10-K
| Annual Report for the period ended December 31, 2009 |
| 03/11/2009 |
10-K
| Annual Report for the period ended December 31, 2008 |
| 02/25/2008 |
10-K
| Annual Report for the period ended December 31, 2007 |
| 02/25/2008 |
AR
| 2007 Annual Report |
| 02/23/2007 |
10-K
| Annual Report for the period ended December 31, 2006 |
| 02/23/2007 |
AR
| 2006 Annual Report |
| 02/23/2006 |
10-K
| Annual Report for the period ended December 31, 2005 |
| 02/25/2005 |
10-K
| Annual Report for the period ended December 31, 2004 |
| 03/09/2004 |
10-K
| Annual Report for the period ended December 31, 2003 |
| 03/18/2003 |
10-K
| Annual Report for the period ended December 31, 2002 |
| 03/21/2002 |
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 |
| 03/22/2000 |
10-K
| Annual Report for the period ended December 31, 1999 |
| 03/26/1999 |
10-K
| Annual Report for the period ended December 31, 1998 |
| 03/11/1998 |
10-K
| Annual Report for the period ended December 31, 1997 |
| 03/24/1997 |
10-K
| Annual Report for the period ended December 31, 1996 |