| Board of Directors | 1996 – 1998 |
| Board of Directors | 1999 – 2000 |
| Board of Directors | 1999 – 1999 |
| Board of Directors | 1998 – 1999 |
| Board of Directors | 1999 – 1999 |
| Chairman | 1999 – 2003 |
| Deputy Chairman | 2000 – 2003 |
| Board of Directors | 1999 – 2003 |
| Chairman | 1974 – 1987 |
| Board of Directors | 1974 – 1998 |
| Board of Directors | 1974 – 1996 |
| Chairman | 1974 – 1999 |
| Chairman | 1974 – 1991 |
| Board of Directors | 1974 – 1988 |
| Chairman | 1974 – 1993 |
| Board of Directors | 1974 – 1994 |
| Board of Directors | 1974 – 1999 |