| Board of Directors | 1991 – 1991 |
| Board of Directors | 1996 – 1998 |
| Board of Directors | 1991 – 1991 |
| Board of Directors | 1991 – 1993 |
| Board of Directors | 1991 – 1996 |
| Board of Directors | 1991 – 1993 |
| Chairman | 1998 – 2016 |
| Board of Directors | 1996 – 1996 |
| Board of Directors | 1991 – 2016 |
| Chairman | 1991 – 1998 |
| Board of Directors | 1998 – 2016 |
| Board of Directors | 1991 – 1991 |
| Board of Directors | 1991 – 1996 |