| Current (3) |
| Chairman | 2024 |
| Deputy Chairman | 2023 |
| Board of Directors | 2019 |
| Former (31) |
| Board of Directors | 2012 – 2019 |
| Board of Directors | 1999 – 2003 |
| Board of Directors | 1999 – 2000 |
| Board of Directors | 2001 – 2002 |
| Board of Directors | 2007 – 2012 |
| Deputy Chairman | 2005 – 2023 |
| Board of Directors | 2002 – 2004 |
| Board of Directors | 1980 – 1999 |
| Chairman | 2014 – 2018 |
| Chairman | 2018 – 2024 |
| Board of Directors | 1980 – 2003 |
| Board of Directors | 2004 – 2005 |
| Board of Directors | 1980 – 1988 |
| Deputy Chairman | 2003 – 2004 |
| Board of Directors | 2000 – 2001 |
| Board of Directors | 2006 – 2008 |
| Board of Directors | 1980 – 1998 |
| Deputy Chairman | 1980 – 1989 |
| Board of Directors | 2003 – 2008 |
| Board of Directors | 2003 – 2005 |
| Deputy Chairman | 1980 – 1999 |
| Deputy Chairman | 1980 – 1996 |
| Board of Directors | 1980 – 2000 |
| Chairman | 2008 – 2012 |
| Chairman | 2004 – 2008 |
| Chairman | 2002 – 2004 |
| Board of Directors | 1980 – 2004 |
| Board of Directors | 1980 – 1989 |
| Chairman | 2012 – 2014 |
| Deputy Chairman | 1999 – 2000 |
| Board of Directors | 1980 – 1994 |
