| Board of Directors | 1976 – 1988 |
| Board of Directors | 1976 – 1996 |
| Board of Directors | 2008 – 2008 |
| Board of Directors | 1976 – 1990 |
| Board of Directors | 2004 – 2006 |
| Board of Directors | 2001 – 2002 |
| Board of Directors | 1976 – 1992 |
| Board of Directors | 1976 – 2004 |
| Chairman | 2004 – 2006 |
| Board of Directors | 1976 – 2001 |
| Board of Directors | 1976 – 1999 |
| Board of Directors | 2006 – 2008 |
| Chairman | 2006 – 2008 |
| Board of Directors | 1976 – 1994 |
| Board of Directors | 2002 – 2004 |