| Current (2) |
| Board of Directors | 2023 |
| Chairman | 2004 |
| Former (18) |
| Board of Directors | 1972 – 1987 |
| Board of Directors | 1998 – 1999 |
| Board of Directors | 1972 – 2004 |
| Board of Directors | 1998 – 1999 |
| Deputy Chairman | 1972 – 1993 |
| Board of Directors | 1999 – 2012 |
| Board of Directors | 1972 – 1989 |
| Board of Directors | 1999 – 2012 |
| Board of Directors | 1999 – 2012 |
| Board of Directors | 2000 – 2012 |
| Board of Directors | 1972 – 1997 |
| Board of Directors | 2004 – 2023 |
| Board of Directors | 1996 – 2012 |
| Board of Directors | 1999 – 2000 |
| Board of Directors | 1972 – 1995 |
| Board of Directors | 1972 – 1993 |
| Board of Directors | 1972 – 1989 |
| Board of Directors | 1972 – 1989 |
