| Former (25) |
| Board of Directors | 2002 – 2007 |
| Deputy Chairman | 1985 – 1993 |
| Board of Directors | 1985 – 1991 |
| Chairman | 1997 – 1998 |
| Chairman | 1985 – 1997 |
| Board of Directors | 1985 – 1993 |
| Deputy Chairman | 1985 – 1995 |
| Board of Directors | 1985 – 1995 |
| Deputy Chairman | 1998 – 2002 |
| Board of Directors | 1985 – 1994 |
| Chairman | 2002 – 2007 |
| Board of Directors | 1999 – 2002 |
| Board of Directors | 1997 – 1998 |
| Board of Directors | 1998 – 1999 |
| Deputy Chairman | 1985 – 1987 |
| Chairman | 1985 – 1995 |
| Chairman | 1985 – 1995 |
| Board of Directors | 2002 – 2007 |
| Chairman | 1985 – 1996 |
| Board of Directors | 1985 – 1989 |
| Chairman | 1998 – 2002 |
| Board of Directors | 1997 – 1997 |
| Deputy Chairman | 1985 – 1997 |
| Chairman | 1985 – 1989 |
| Chairman | 1985 – 1993 |