| Board of Directors | 2002 – 2009 |
| Chairman | 2008 – 2009 |
| Board of Directors | 1974 – 1998 |
| Board of Directors | 2002 – 2004 |
| Board of Directors | 1974 – 1993 |
| Board of Directors | 1974 – 1988 |
| Board of Directors | 1974 – 1999 |
| Board of Directors | 2004 – 2009 |
| Board of Directors | 1974 – 2000 |
| Board of Directors | 2000 – 2002 |
| Board of Directors | 1974 – 1988 |
| Board of Directors | 1974 – 1991 |
| Board of Directors | 1974 – 1989 |
| Board of Directors | 1974 – 1999 |
| Board of Directors | 1999 – 2009 |
| Board of Directors | 1974 – 2002 |
| Board of Directors | 1974 – 1992 |
| Board of Directors | 2000 – 2000 |
| Chairman | 1999 – 2008 |