| Chairman | 1985 – 1989 |
| Board of Directors | 1997 – 1997 |
| Board of Directors | 1985 – 1997 |
| Board of Directors | 1985 – 1997 |
| Board of Directors | 1985 – 1990 |
| Board of Directors | 1985 – 1997 |
| Board of Directors | 1985 – 1996 |
| Board of Directors | 1985 – 1990 |
| Chairman | 1985 – 1993 |
| Chairman | 1997 – 1997 |
| Board of Directors | 1985 – 1989 |
| Board of Directors | 1985 – 1993 |
| Board of Directors | 1985 – 1990 |
| Board of Directors | 1985 – 1996 |
| Board of Directors | 1985 – 1988 |