| Board of Directors | 1997 – 2000 |
| Board of Directors | 1971 – 1996 |
| Board of Directors | 1998 – 1999 |
| Board of Directors | 1971 – 1990 |
| Chairman | 1996 – 2000 |
| Board of Directors | 1999 – 2000 |
| Board of Directors | 1971 – 1989 |
| Board of Directors | 1996 – 1998 |
| Board of Directors | 1971 – 1992 |
| Board of Directors | 1971 – 1996 |
| Board of Directors | 1971 – 1990 |
| Board of Directors | 1971 – 1990 |
| Board of Directors | 1971 – 1997 |
| Board of Directors | 1997 – 2000 |
| Board of Directors | 1996 – 2000 |
| Board of Directors | 1971 – 1990 |
| Board of Directors | 1971 – 1989 |