| Board of Directors | 1968 – 1994 |
| Chairman | 1998 – 2001 |
| Board of Directors | 1997 – 1999 |
| Board of Directors | 1968 – 1991 |
| Board of Directors | 1998 – 2001 |
| Chairman | 1996 – 1996 |
| Board of Directors | 1997 – 2001 |
| Board of Directors | 1968 – 1996 |
| Chairman | 1968 – 1997 |
| Board of Directors | 1968 – 1992 |
| Chairman | 1968 – 1996 |
| Deputy Chairman | 1968 – 1988 |
| Chairman | 2001 – 2001 |
| Chairman | 1968 – 1994 |
| Board of Directors | 1999 – 2001 |