| 2009 | 56th Plenary Session: June 2009 | Paris |
| 2008 | 55th Plenary Session: December 2008 | Paris |
| 2008 | 54th Plenary Session: June 2008 | Paris |
| 2007 | 53rd Plenary Session June & December 2007 | Paris |
| 2006 | 52nd Plenary Session: June & December 2006 | Paris |
| 2005 | 51st Plenary Session: June & December 2005 | Paris |
| 2004 | 50th Plenary Session: June & December 2004 | Paris |
| 2003 | 49th Plenary Session: June & December 2003 | 49th |
| 2002 | 48th Plenary Session: June & December 2002 | Paris |
| 2001 | 47th Plenary Session: June & December 2001 | Paris |
| 2000 | 46th Plenary Session : June & December 2000 | in Paris |
