| Former (28) |
| Chairman | 1982 – 1988 |
| Board of Directors | 1999 – 2001 |
| Chairman | 2000 – 2001 |
| Board of Directors | 1982 – 1991 |
| Board of Directors | 1982 – 1991 |
| Board of Directors | 1999 – 2000 |
| Board of Directors | 1982 – 1996 |
| Chairman | 1982 – 1989 |
| Chairman | 2005 – 2009 |
| Board of Directors | 2001 – 2004 |
| Board of Directors | 1982 – 2001 |
| Board of Directors | 1982 – 1991 |
| Board of Directors | 2009 – 2014 |
| Deputy Chairman | 1982 – 1988 |
| Chairman | 2009 – 2012 |
| Board of Directors | 2004 – 2009 |
| Chairman | 2012 – 2014 |
| Board of Directors | 1982 – 1999 |
| Board of Directors | 1982 – 1989 |
| Board of Directors | 1999 – 2001 |
| Board of Directors | 1982 – 1999 |
| Chairman | 1982 – 1991 |
| Board of Directors | 1982 – 1999 |
| Board of Directors | 1982 – 1988 |
| Board of Directors | 2000 – 2001 |
| Deputy Chairman | 1982 – 1989 |
| Chairman | 1982 – 1988 |
| Board of Directors | 1982 – 1988 |
