| Former (20) |
| Board of Directors | 1992 – 1996 |
| Chairman | 1996 – 1997 |
| Board of Directors | 1996 – 1998 |
| Chairman | 1992 – 1993 |
| Board of Directors | 1996 – 1997 |
| Board of Directors | 1998 – 2000 |
| Chairman | 2008 – 2011 |
| Board of Directors | 1992 – 1996 |
| Chairman | 1998 – 2008 |
| Board of Directors | 2008 – 2011 |
| Board of Directors | 1998 – 1998 |
| Board of Directors | 1995 – 1996 |
| Board of Directors | 1998 – 1998 |
| Board of Directors | 2002 – 2008 |
| Board of Directors | 1996 – 1997 |
| Chairman | 1997 – 1998 |
| Board of Directors | 2000 – 2002 |
| Board of Directors | 1997 – 1997 |
| Board of Directors | 2000 – 2008 |
| Board of Directors | 1992 – 1993 |