| Board of Directors | 1987 – 1988 |
| Board of Directors | 1996 – 1997 |
| Chairman | 1987 – 1994 |
| Board of Directors | 2005 – 2009 |
| Chairman | 2005 – 2009 |
| Board of Directors | 2005 – 2009 |
| Board of Directors | 1994 – 1996 |
| Chairman | 1987 – 1990 |
| Board of Directors | 1987 – 1990 |
| Chairman | 1997 – 2005 |
| Board of Directors | 2005 – 2009 |
| Board of Directors | 1994 – 2005 |
| Chairman | 1987 – 1988 |
| Board of Directors | 2005 – 2009 |
| Board of Directors | 1996 – 1997 |
| Board of Directors | 1987 – 1988 |
| Board of Directors | 1987 – 1996 |