| Former (20) |
| Chairman | 1994 – 1999 |
| Chairman | 2002 – 2006 |
| Board of Directors | 1999 – 2001 |
| Board of Directors | 2000 – 2002 |
| Board of Directors | 1983 – 1996 |
| Board of Directors | 2011 – 2024 |
| Board of Directors | 1983 – 1990 |
| Chairman | 2019 – 2024 |
| Board of Directors | 2001 – 2002 |
| Board of Directors | 1983 – 1992 |
| Chairman | 2006 – 2019 |
| Board of Directors | 2001 – 2001 |
| Board of Directors | 1983 – 1990 |
| Board of Directors | 1983 – 1991 |
| Board of Directors | 1983 – 1991 |
| Board of Directors | 1983 – 1999 |
| Board of Directors | 1983 – 1991 |
| Board of Directors | 1983 – 1999 |
| Chairman | 1999 – 2002 |
| Board of Directors | 1999 – 2001 |