| Deputy Chairman | 1996 – 2000 |
| Chairman | 2000 – 2003 |
| Board of Directors | 1998 – 1998 |
| Board of Directors | 1998 – 2000 |
| Board of Directors | 2000 – 2003 |
| Board of Directors | 1966 – 1995 |
| Board of Directors | 1966 – 1996 |
| Board of Directors | 1998 – 2000 |
| Chairman | 1966 – 1989 |
| Board of Directors | 1997 – 1998 |
| Board of Directors | 1966 – 1989 |
| Board of Directors | 1966 – 1992 |
| Deputy Chairman | 2000 – 2006 |
| Chairman | 2003 – 2006 |
| Board of Directors | 2003 – 2006 |
| Chairman | 1997 – 2000 |