| Board of Directors | 1979 – 1988 |
| Board of Directors | 2001 – 2006 |
| Board of Directors | 1979 – 1999 |
| Board of Directors | 1979 – 2004 |
| Board of Directors | 2005 – 2006 |
| Board of Directors | 1979 – 1992 |
| Board of Directors | 2004 – 2006 |
| Board of Directors | 1979 – 1994 |
| Board of Directors | 2003 – 2005 |
| Chairman | 2001 – 2006 |
| Board of Directors | 1999 – 2001 |
| Board of Directors | 2005 – 2006 |
| Board of Directors | 2003 – 2005 |
| Chairman | 1979 – 2004 |