| Former (18) |
| Board of Directors | 1953 – 1991 |
| Chairman | 1953 – 1991 |
| Board of Directors | 1953 – 1992 |
| Board of Directors | 2001 – 2002 |
| Chairman | 1998 – 1999 |
| Chairman | 1953 – 1993 |
| Chairman | 1999 – 1999 |
| Board of Directors | 1953 – 1989 |
| Chairman | 1953 – 1991 |
| Board of Directors | 1953 – 1991 |
| Chairman | 1953 – 1998 |
| Board of Directors | 1999 – 2002 |
| Board of Directors | 1953 – 1992 |
| Chairman | 2002 – 2003 |
| Board of Directors | 1953 – 1993 |
| Board of Directors | 2002 – 2003 |
| Chairman | 1999 – 2002 |
| Board of Directors | 2000 – 2001 |