| Date Filed | Type | Description |
| 02/16/2022 |
10-K
| Annual Report for the period ended December 31, 2021 |
| 02/18/2021 |
10-K
| Annual Report for the period ended December 31, 2020 |
| 02/19/2020 |
10-K
| Annual Report for the period ended December 31, 2019 |
| 02/20/2019 |
10-K
| Annual Report for the period ended December 31, 2018 |
| 02/21/2018 |
10-K
| Annual Report for the period ended December 31, 2017 |
| 02/22/2017 |
10-K
| Annual Report for the period ended December 31, 2016 |
| 02/19/2016 |
10-K
| Annual Report for the period ended December 31, 2015 |
| 02/24/2015 |
10-K
| Annual Report for the period ended December 31, 2014 |
| 02/20/2014 |
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 |
| 02/22/2012 |
10-K
| Annual Report for the period ended December 31, 2011 |
| 02/17/2011 |
10-K
| Annual Report for the period ended December 31, 2010 |
| 02/18/2010 |
10-K
| Annual Report for the period ended December 31, 2009 |
| 02/19/2009 |
10-K
| Annual Report for the period ended December 31, 2008 |
| 02/21/2008 |
10-K
| Annual Report for the period ended December 31, 2007 |
| 02/21/2008 |
AR
| 2007 summary annual report (pdf version) |
| 02/26/2007 |
10-K
| Annual Report for the period ended December 31, 2006 |
| 02/26/2007 |
AR
| 2006 summary annual report (pdf version) |
| 02/23/2006 |
10-K
| Annual Report for the period ended December 31, 2005 |
| 02/23/2006 |
AR
| 2005 summary annual report (pdf version) |
| 03/14/2005 |
10-K
| Annual Report for the period ended December 31, 2004 |
| 03/14/2005 |
AR
| 2004 summary annual report (pdf version) |
| 02/27/2004 |
10-K
| Annual Report for the period ended December 31, 2003 |
| 02/27/2004 |
AR
| 2003 summary annual report (pdf version) |
| 03/07/2003 |
10-K
| Annual Report for the period ended December 31, 2002 |
| 03/25/2002 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |