| Current (3) |
| Chairman | 2026 |
| Board of Directors | 2026 |
| Board of Directors | 2026 |
| Former (37) |
| Chairman | 2006 – 2007 |
| Board of Directors | 2003 – 2004 |
| Board of Directors | 1949 – 1994 |
| Board of Directors | 2021 – 2026 |
| Board of Directors | 2013 – 2014 |
| Board of Directors | 2024 – 2025 |
| Board of Directors | 2001 – 2003 |
| Board of Directors | 2004 – 2009 |
| Board of Directors | 1999 – 2002 |
| Board of Directors | 1949 – 1996 |
| Chairman | 1998 – 1999 |
| Chairman | 1949 – 1998 |
| Board of Directors | 2015 – 2021 |
| Board of Directors | 1999 – 2004 |
| Board of Directors | 2020 – 2024 |
| Board of Directors | 1997 – 1999 |
| Board of Directors | 2009 – 2015 |
| Board of Directors | 1949 – 1991 |
| Board of Directors | 2002 – 2003 |
| Board of Directors | 2009 – 2009 |
| Chairman | 2020 – 2024 |
| Board of Directors | 1999 – 1999 |
| Chairman | 2007 – 2008 |
| Board of Directors | 2001 – 2003 |
| Board of Directors | 1999 – 2000 |
| Board of Directors | 1949 – 1995 |
| Board of Directors | 2005 – 2007 |
| Board of Directors | 1949 – 1994 |
| Board of Directors | 1949 – 1992 |
| Chairman | 2005 – 2006 |
| Chairman | 2024 – 2026 |
| Board of Directors | 1949 – 1992 |
| Chairman | 1949 – 1991 |
| Chairman | 2009 – 2010 |
| Chairman | 2013 – 2015 |
| Chairman | 2015 – 2020 |
| Board of Directors | 1999 – 2001 |