| Board of Directors | 1997 – 2000 |
| Board of Directors | 1971 – 1993 |
| Board of Directors | 2001 – 2007 |
| Board of Directors | 1971 – 1992 |
| Board of Directors | 2005 – 2007 |
| Board of Directors | 2005 – 2007 |
| Board of Directors | 1971 – 2007 |
| Board of Directors | 1971 – 1994 |
| Chairman | 2005 – 2007 |
| Board of Directors | 1971 – 2007 |
| Chairman | 1971 – 2005 |
| Board of Directors | 1995 – 1996 |
| Board of Directors | 1971 – 2005 |
| Board of Directors | 1971 – 1995 |
| Board of Directors | 1971 – 1997 |
| Board of Directors | 1971 – 2005 |