| Chairman | 1998 – 2000 |
| Deputy Chairman | 1998 – 2000 |
| Chairman | 1997 – 1998 |
| Deputy Chairman | 1982 – 1989 |
| Board of Directors | 1982 – 1991 |
| Chairman | 1982 – 1997 |
| Board of Directors | 1982 – 1993 |
| Board of Directors | 1982 – 1991 |
| Board of Directors | 1982 – 1996 |
| Board of Directors | 1982 – 1998 |
| Board of Directors | 1982 – 1990 |
| Board of Directors | 1998 – 2000 |
| Board of Directors | 1998 – 2000 |
| Board of Directors | 1982 – 1990 |
| Deputy Chairman | 1982 – 1990 |