| Former (20) |
| Board of Directors | 1990 – 1998 |
| Board of Directors | 2006 – 2007 |
| Board of Directors | 2001 – 2003 |
| Board of Directors | 1990 – 1991 |
| Board of Directors | 1990 – 1996 |
| Board of Directors | 1990 – 1991 |
| Chairman | 2007 – 2007 |
| Deputy Chairman | 1990 – 1997 |
| Board of Directors | 1990 – 1994 |
| Chairman | 2006 – 2007 |
| Board of Directors | 2006 – 2007 |
| Board of Directors | 1996 – 1998 |
| Board of Directors | 1990 – 1996 |
| Board of Directors | 2007 – 2007 |
| Chairman | 1990 – 1994 |
| Board of Directors | 1995 – 1996 |
| Board of Directors | 1990 – 2006 |
| Chairman | 1990 – 2006 |
| Board of Directors | 2007 – 2007 |
| Board of Directors | 2007 – 2007 |