| Board of Directors | 1986 – 1989 |
| Chairman | 1986 – 2005 |
| Board of Directors | 1986 – 1989 |
| Board of Directors | 2005 – 2017 |
| Board of Directors | 1986 – 1989 |
| Board of Directors | 1986 – 2011 |
| Board of Directors | 1986 – 1991 |
| Board of Directors | 2011 – 2017 |
| Board of Directors | 1986 – 1989 |
| Chairman | 2005 – 2017 |
| Board of Directors | 1986 – 2005 |
| Board of Directors | 1986 – 1988 |
| Board of Directors | 1986 – 1987 |
| Board of Directors | 1986 – 1989 |