| Former (25) |
| Board of Directors | 1964 – 1993 |
| Board of Directors | 1996 – 1998 |
| Board of Directors | 1998 – 2002 |
| Board of Directors | 2002 – 2004 |
| Deputy Chairman | 2002 – 2004 |
| Board of Directors | 1998 – 2004 |
| Board of Directors | 1964 – 1996 |
| Board of Directors | 1964 – 1999 |
| Board of Directors | 1964 – 1996 |
| Board of Directors | 1996 – 1998 |
| Board of Directors | 1999 – 2002 |
| Chairman | 1964 – 2002 |
| Chairman | 2002 – 2004 |
| Board of Directors | 1964 – 1996 |
| Deputy Chairman | 1964 – 1999 |
| Board of Directors | 1964 – 1990 |
| Chairman | 1964 – 1991 |
| Board of Directors | 1964 – 1990 |
| Board of Directors | 1996 – 1998 |
| Deputy Chairman | 1999 – 2002 |
| Board of Directors | 1964 – 2004 |
| Chairman | 1964 – 1987 |
| Board of Directors | 1999 – 2004 |
| Board of Directors | 2002 – 2004 |
| Board of Directors | 1964 – 1996 |
