| Former (20) |
| Board of Directors | 2005 – 2007 |
| Board of Directors | 2004 – 2007 |
| Chairman | 1998 – 2005 |
| Board of Directors | 2004 – 2005 |
| Board of Directors | 2000 – 2005 |
| Chairman | 1992 – 1998 |
| Board of Directors | 2005 – 2007 |
| Board of Directors | 2000 – 2005 |
| Board of Directors | 1992 – 1996 |
| Board of Directors | 1992 – 2003 |
| Board of Directors | 1992 – 2000 |
| Board of Directors | 2003 – 2003 |
| Board of Directors | 2004 – 2005 |
| Chairman | 1998 – 1998 |
| Board of Directors | 1992 – 2004 |
| Chairman | 2005 – 2007 |
| Board of Directors | 1992 – 1996 |
| Board of Directors | 1992 – 1995 |
| Board of Directors | 1992 – 2000 |
| Board of Directors | 2003 – 2004 |