| Chairman | 1998 – 2005 |
| Board of Directors | 1986 – 1994 |
| Board of Directors | 1986 – 1994 |
| Board of Directors | 1986 – 1992 |
| Board of Directors | 2001 – 2005 |
| Board of Directors | 1986 – 1991 |
| Board of Directors | 1986 – 1995 |
| Board of Directors | 2000 – 2001 |
| Chairman | 1994 – 1998 |
| Board of Directors | 1986 – 2000 |
| Chairman | 2005 – 2005 |
| Board of Directors | 1986 – 1994 |
| Board of Directors | 1986 – 2005 |
| Board of Directors | 1986 – 1991 |
| Board of Directors | 1986 – 1991 |
| Board of Directors | 1986 – 1995 |