| Current (3) |
| Chairman | 2023 |
| Board of Directors | 2019 |
| Board of Directors | 2002 |
| Former (29) |
| Board of Directors | 1913 – 1994 |
| Board of Directors | 2008 – 2012 |
| Board of Directors | 2004 – 2004 |
| Chairman | 1913 – 1989 |
| Chairman | 2006 – 2008 |
| Board of Directors | 1913 – 1998 |
| Board of Directors | 1913 – 1997 |
| Board of Directors | 1913 – 1994 |
| Board of Directors | 2018 – 2019 |
| Board of Directors | 1913 – 1989 |
| Board of Directors | 1913 – 1994 |
| Chairman | 2017 – 2019 |
| Chairman | 2019 – 2022 |
| Board of Directors | 2003 – 2006 |
| Board of Directors | 1913 – 1990 |
| Board of Directors | 2012 – 2019 |
| Board of Directors | 1998 – 2002 |
| Board of Directors | 1913 – 1989 |
| Board of Directors | 2002 – 2008 |
| Chairman | 2004 – 2006 |
| Board of Directors | 2006 – 2013 |
| Board of Directors | 1999 – 2002 |
| Board of Directors | 1913 – 1989 |
| Chairman | 2008 – 2017 |
| Chairman | 1913 – 1998 |
| Board of Directors | 1913 – 2002 |
| Board of Directors | 1913 – 1988 |
| Board of Directors | 2013 – 2015 |
| Chairman | 2022 – 2023 |