| Board of Directors | 1988 – 2012 |
| Board of Directors | 2007 – 2013 |
| Board of Directors | 1988 – 1994 |
| Board of Directors | 1988 – 1991 |
| Board of Directors | 1988 – 1992 |
| Board of Directors | 1988 – 1996 |
| Chairman | 2003 – 2007 |
| Board of Directors | 1988 – 1989 |
| Board of Directors | 1988 – 1996 |
| Board of Directors | 2007 – 2013 |
| Board of Directors | 1988 – 1991 |
| Board of Directors | 1988 – 2007 |
| Board of Directors | 1988 – 1999 |
| Board of Directors | 1988 – 1989 |
| Board of Directors | 2007 – 2011 |
| Board of Directors | 1988 – 1996 |
| Chairman | 2007 – 2013 |
| Board of Directors | 1988 – 1991 |
| Board of Directors | 1988 – 1991 |