| Former (17) |
| Board of Directors | 1989 – 1990 |
| Board of Directors | 1989 – 1990 |
| Board of Directors | 1989 – 1996 |
| Board of Directors | 2008 – 2011 |
| Board of Directors | 1999 – 2002 |
| Board of Directors | 2001 – 2002 |
| Chairman | 2001 – 2003 |
| Board of Directors | 1989 – 1990 |
| Board of Directors | 1989 – 1997 |
| Board of Directors | 1989 – 1998 |
| Board of Directors | 1999 – 2000 |
| Board of Directors | 2003 – 2008 |
| Chairman | 2008 – 2011 |
| Chairman | 2003 – 2008 |
| Board of Directors | 2003 – 2005 |
| Board of Directors | 1989 – 1999 |
| Board of Directors | 1999 – 2001 |