| Current (4) |
| Chairman | 2025 |
| Board of Directors | 2024 |
| Board of Directors | 2025 |
| Board of Directors | 2024 |
| Former (24) |
| Chairman | 2022 – 2025 |
| Board of Directors | 1920 – 1995 |
| Board of Directors | 2019 – 2020 |
| Board of Directors | 1920 – 1994 |
| Board of Directors | 2022 – 2023 |
| Chairman | 1920 – 1994 |
| Board of Directors | 1999 – 2015 |
| Board of Directors | 2010 – 2018 |
| Board of Directors | 2025 – 2025 |
| Board of Directors | 2007 – 2010 |
| Chairman | 2000 – 2017 |
| Board of Directors | 2010 – 2019 |
| Board of Directors | 2007 – 2010 |
| Board of Directors | 1998 – 2001 |
| Board of Directors | 1920 – 1998 |
| Board of Directors | 2015 – 2016 |
| Board of Directors | 2022 – 2024 |
| Board of Directors | 1920 – 1994 |
| Chairman | 2017 – 2022 |
| Board of Directors | 2023 – 2024 |
| Board of Directors | 2022 – 2023 |
| Board of Directors | 2024 – 2025 |
| Board of Directors | 1920 – 1999 |
| Chairman | 1920 – 2000 |