| Current (7) |
| Board of Directors | 2025 |
| Board of Directors | 2017 |
| Board of Directors | 2014 |
| Board of Directors | 2016 |
| Chairman | 2021 |
| Board of Directors | 2019 |
| Board of Directors | 2002 |
| Former (14) |
| Board of Directors | 1916 – 2002 |
| Board of Directors | 2021 – 2025 |
| Board of Directors | 2005 – 2017 |
| Board of Directors | 2006 – 2016 |
| Board of Directors | 1916 – 2014 |
| Board of Directors | 2001 – 2019 |
| Chairman | 1999 – 2021 |
| Board of Directors | 2002 – 2006 |
| Board of Directors | 1916 – 2005 |
| Board of Directors | 1916 – 1996 |
| Chairman | 1916 – 2000 |
| Board of Directors | 2000 – 2002 |
| Board of Directors | 1916 – 2001 |
| Board of Directors | 1916 – 2017 |