| Former (23) |
| Board of Directors | 2000 – 2003 |
| Board of Directors | 1988 – 2000 |
| Board of Directors | 1988 – 1994 |
| Board of Directors | 1988 – 1994 |
| Board of Directors | 1988 – 1993 |
| Board of Directors | 1996 – 1999 |
| Board of Directors | 1988 – 1998 |
| Board of Directors | 1988 – 1993 |
| Board of Directors | 1988 – 1996 |
| Board of Directors | 1988 – 1996 |
| Board of Directors | 1988 – 1996 |
| Chairman | 2000 – 2003 |
| Board of Directors | 2005 – 2009 |
| Board of Directors | 1988 – 1999 |
| Board of Directors | 2005 – 2009 |
| Board of Directors | 1988 – 1996 |
| Board of Directors | 1988 – 1993 |
| Board of Directors | 1988 – 1996 |
| Board of Directors | 1996 – 1998 |
| Board of Directors | 1988 – 1994 |
| Board of Directors | 1988 – 1996 |
| Board of Directors | 1996 – 1999 |
| Board of Directors | 1988 – 1997 |