| Current (4) |
| Chairman | 2025 |
| Board of Directors | 2018 |
| Deputy Chairman | 2018 |
| Board of Directors | 2009 |
| Former (27) |
| Chairman | 2002 – 2003 |
| Board of Directors | 1923 – 1995 |
| Chairman | 2023 – 2025 |
| Deputy Chairman | 2005 – 2018 |
| Chairman | 2001 – 2002 |
| Board of Directors | 1998 – 2001 |
| Board of Directors | 2004 – 2009 |
| Board of Directors | 1923 – 1990 |
| Chairman | 1923 – 1991 |
| Chairman | 1923 – 2001 |
| Board of Directors | 1923 – 1991 |
| Chairman | 2013 – 2018 |
| Board of Directors | 1923 – 1988 |
| Board of Directors | 2002 – 2007 |
| Chairman | 2018 – 2023 |
| Board of Directors | 1923 – 1987 |
| Board of Directors | 2004 – 2009 |
| Chairman | 2011 – 2013 |
| Chairman | 2003 – 2007 |
| Board of Directors | 1923 – 2001 |
| Chairman | 1923 – 1996 |
| Board of Directors | 2007 – 2008 |
| Board of Directors | 2008 – 2018 |
| Deputy Chairman | 1923 – 2005 |
| Board of Directors | 1923 – 2004 |
| Chairman | 2007 – 2010 |
| Board of Directors | 2001 – 2004 |
