| Board of Directors | 1995 – 1999 |
| Board of Directors | 1999 – 2000 |
| Chairman | 1957 – 1999 |
| Chairman | 1957 – 1992 |
| Board of Directors | 1957 – 1988 |
| Board of Directors | 1957 – 1989 |
| Chairman | 1957 – 1993 |
| Board of Directors | 1957 – 1991 |
| Board of Directors | 1999 – 2011 |
| Board of Directors | 1957 – 1993 |
| Board of Directors | 2000 – 2001 |
| Board of Directors | 1957 – 1991 |
| Board of Directors | 1957 – 1999 |
| Board of Directors | 1957 – 1993 |
| Board of Directors | 1957 – 1990 |
| Chairman | 1957 – 1995 |
| Board of Directors | 1957 – 2001 |
| Board of Directors | 1999 – 2006 |
| Chairman | 1957 – 1989 |
| Board of Directors | 1999 – 2011 |
| Board of Directors | 1957 – 1990 |
| Board of Directors | 1957 – 2001 |
| Board of Directors | 2001 – 2011 |
| Chairman | 1957 – 1989 |
| Board of Directors | 1957 – 1999 |
| Board of Directors | 1957 – 1991 |
| Board of Directors | 1957 – 1987 |