| Current (2) |
| Board of Directors | 2024 |
| Chairman | 2016 |
| Former (23) |
| Board of Directors | 2001 – 2002 |
| Board of Directors | 2004 – 2005 |
| Deputy Chairman | 2016 – 2023 |
| Board of Directors | 2001 – 2002 |
| Board of Directors | 2009 – 2014 |
| Board of Directors | 1973 – 1989 |
| Board of Directors | 2005 – 2009 |
| Board of Directors | 2002 – 2004 |
| Chairman | 2004 – 2005 |
| Chairman | 1973 – 2001 |
| Board of Directors | 1973 – 1992 |
| Board of Directors | 2002 – 2002 |
| Board of Directors | 2008 – 2009 |
| Chairman | 2002 – 2004 |
| Board of Directors | 1973 – 1989 |
| Chairman | 2004 – 2004 |
| Chairman | 2005 – 2006 |
| Board of Directors | 1973 – 1992 |
| Board of Directors | 1973 – 2001 |
| Board of Directors | 1973 – 1995 |
| Board of Directors | 1973 – 1994 |
| Board of Directors | 1973 – 1990 |
| Chairman | 1973 – 1994 |
