| Board of Directors | 1988 – 1994 |
| Board of Directors | 1999 – 2012 |
| Board of Directors | 1988 – 1990 |
| Board of Directors | 1988 – 2012 |
| Board of Directors | 1988 – 1991 |
| Chairman | 1988 – 2007 |
| Board of Directors | 2007 – 2012 |
| Board of Directors | 1988 – 1994 |
| Board of Directors | 1988 – 1995 |
| Board of Directors | 1988 – 1991 |
| Board of Directors | 1988 – 1999 |
| Board of Directors | 1988 – 1995 |
| Board of Directors | 2007 – 2012 |
| Board of Directors | 1988 – 2007 |
| Board of Directors | 1988 – 2007 |
| Board of Directors | 2007 – 2012 |