| Board of Directors | 2000 – 2000 |
| Board of Directors | 2000 – 2008 |
| Chairman | 1999 – 2000 |
| Board of Directors | 1981 – 1997 |
| Board of Directors | 1981 – 1991 |
| Board of Directors | 1981 – 1997 |
| Chairman | 1981 – 1993 |
| Board of Directors | 1981 – 1999 |
| Board of Directors | 1999 – 2000 |
| Board of Directors | 1981 – 1991 |
| Board of Directors | 1981 – 1993 |
| Board of Directors | 1981 – 1988 |
| Board of Directors | 1981 – 1997 |
| Chairman | 2000 – 2008 |
| Board of Directors | 1993 – 1997 |
| Board of Directors | 2000 – 2008 |