| Board of Directors | 1964 – 1993 |
| Board of Directors | 1997 – 2000 |
| Board of Directors | 1964 – 2002 |
| Board of Directors | 2007 – 2008 |
| Board of Directors | 1964 – 2002 |
| Board of Directors | 2002 – 2007 |
| Board of Directors | 2001 – 2002 |
| Board of Directors | 1964 – 1994 |
| Board of Directors | 2002 – 2006 |
| Board of Directors | 2007 – 2008 |
| Chairman | 2007 – 2008 |
| Board of Directors | 1997 – 2001 |
| Board of Directors | 2002 – 2007 |
| Chairman | 2002 – 2007 |
| Board of Directors | 1964 – 1996 |