| Board of Directors | 1987 – 1988 |
| Board of Directors | 1987 – 2000 |
| Chairman | 1987 – 2006 |
| Board of Directors | 2005 – 2006 |
| Board of Directors | 2001 – 2005 |
| Board of Directors | 1987 – 1995 |
| Board of Directors | 1987 – 1989 |
| Board of Directors | 2000 – 2001 |
| Board of Directors | 2000 – 2004 |
| Board of Directors | 2004 – 2006 |
| Board of Directors | 1987 – 1988 |
| Board of Directors | 1987 – 1991 |
| Chairman | 1987 – 1991 |
| Board of Directors | 1987 – 1995 |
| Board of Directors | 1987 – 1988 |
| Chairman | 1987 – 2000 |