| Former (17) |
| Board of Directors | 1986 – 1989 |
| Board of Directors | 2008 – 2009 |
| Chairman | 1993 – 1997 |
| Board of Directors | 1986 – 1990 |
| Board of Directors | 1986 – 1990 |
| Board of Directors | 1986 – 1993 |
| Chairman | 2008 – 2009 |
| Board of Directors | 1986 – 1997 |
| Board of Directors | 1997 – 2009 |
| Board of Directors | 1986 – 1993 |
| Board of Directors | 1997 – 1997 |
| Board of Directors | 2004 – 2006 |
| Deputy Chairman | 2008 – 2009 |
| Chairman | 1997 – 2008 |
| Board of Directors | 1986 – 1990 |
| Board of Directors | 1993 – 1997 |
| Board of Directors | 1997 – 2004 |