| Date Filed | Type | Description |
| 02/18/2022 |
10-K
| Annual Report for the period ended December 31, 2021 |
| 02/19/2021 |
10-K
| Annual Report for the period ended December 31, 2020 |
| 02/21/2020 |
10-K
| Annual Report for the period ended December 31, 2019 |
| 02/21/2019 |
10-K
| Annual Report for the period ended December 31, 2018 |
| 02/22/2018 |
10-K
| Annual Report for the period ended December 31, 2017 |
| 02/28/2017 |
10-KT
| Form 10-KT - Transition reports [Rule 13a-10 or 15d-10]: |
| 07/28/2016 |
10-K
| Annual Report for the period ended May 31, 2016 |
| 07/30/2015 |
10-K
| Annual Report for the period ended May 31, 2015 |
| 07/29/2014 |
10-K
| Annual Report for the period ended May 31, 2014 |
| 07/25/2013 |
10-K
| Annual Report for the period ended May 31, 2013 |
| 09/28/2012 |
10-K/A
| Annual Report for the period ended May 31, 2012 [amend] |
| 07/27/2012 |
10-K
| Annual Report for the period ended May 31, 2012 |
| 07/25/2011 |
10-K
| Annual Report for the period ended May 31, 2011 |
| 07/28/2010 |
10-K
| Annual Report for the period ended May 31, 2010 |
| 07/28/2009 |
10-K
| Annual Report for the period ended May 31, 2009 |
| 07/30/2008 |
10-K
| Annual Report for the period ended May 31, 2008 |
| 07/30/2007 |
10-K
| Annual Report for the period ended May 31, 2007 |
| 07/30/2007 |
AR
| 2007 Annual Report |
| 08/04/2006 |
10-K
| Annual Report for the period ended May 31, 2006 |
| 08/04/2006 |
AR
| 2006 Annual Report (French version) |
| 08/04/2006 |
AR
| 2006 Annual Report |
| 08/15/2005 |
10-K
| Annual Report for the period ended May 31, 2005 |
| 08/15/2005 |
AR
| 2005 Annual Report |
| 08/10/2004 |
10-K
| Annual Report for the period ended May 31, 2004 |
| 08/10/2004 |
AR
| 2004 Annual Report (Spanish version) |
| 08/10/2004 |
AR
| 2004 Annual Report (Czech version) |
| 08/10/2004 |
AR
| 2004 Annual Report (French version) |
| 08/10/2004 |
AR
| 2004 Annual Report |
| 08/26/2003 |
10-K
| Annual Report for the period ended May 31, 2003 |
| 08/26/2003 |
AR
| 2003 Annual Report (French version) |
| 08/26/2003 |
AR
| 2003 Annual Report |
| 08/28/2002 |
10-K
| Annual Report for the period ended May 31, 2002 |
| 08/28/2002 |
AR
| 2002 Annual Report |
| 08/28/2002 |
AR
| 2002 Annual Report (French version) |