| Current (3) |
| Chairman | 2022 |
| Board of Directors | 2026 |
| Board of Directors | 2019 |
| Former (27) |
| Board of Directors | 2001 – 2005 |
| Board of Directors | 1999 – 2003 |
| Board of Directors | 2019 – 2021 |
| Board of Directors | 1933 – 1999 |
| Chairman | 1999 – 2003 |
| Board of Directors | 1933 – 2004 |
| Chairman | 1933 – 1990 |
| Board of Directors | 1933 – 1993 |
| Board of Directors | 2001 – 2005 |
| Board of Directors | 1999 – 2005 |
| Board of Directors | 1933 – 1995 |
| Board of Directors | 2006 – 2007 |
| Board of Directors | 1933 – 1993 |
| Chairman | 1933 – 1989 |
| Board of Directors | 2004 – 2004 |
| Chairman | 1933 – 1995 |
| Deputy Chairman | 1933 – 1995 |
| Board of Directors | 1933 – 1992 |
| Board of Directors | 1933 – 1993 |
| Chairman | 2012 – 2013 |
| Board of Directors | 2015 – 2016 |
| Board of Directors | 2004 – 2006 |
| Board of Directors | 2016 – 2019 |
| Chairman | 2011 – 2012 |
| Chairman | 1933 – 1999 |
| Board of Directors | 2021 – 2026 |
| Chairman | 2004 – 2011 |
