| Board of Directors | 1998 – 2011 |
| Board of Directors | 1985 – 1998 |
| Board of Directors | 1999 – 2011 |
| Board of Directors | 1985 – 1995 |
| Chairman | 2007 – 2011 |
| Board of Directors | 2007 – 2013 |
| Board of Directors | 1999 – 2011 |
| Chairman | 2011 – 2013 |
| Board of Directors | 2011 – 2013 |
| Board of Directors | 1998 – 2000 |
| Board of Directors | 1985 – 2007 |
| Board of Directors | 1985 – 1992 |
| Board of Directors | 1985 – 1998 |