| Current (6) |
| Board of Directors | 2022 |
| Board of Directors | 2021 |
| Board of Directors | 2023 |
| Board of Directors | 2013 |
| Deputy Chairman | 2023 |
| Chairman | 2023 |
| Former (15) |
| Board of Directors | 2014 – 2022 |
| Board of Directors | 1941 – 1995 |
| Board of Directors | 1941 – 2007 |
| Chairman | 1990 – 2023 |
| Board of Directors | 1941 – 2008 |
| Board of Directors | 2008 – 2018 |
| Board of Directors | 1941 – 2008 |
| Board of Directors | 1941 – 1997 |
| Board of Directors | 1941 – 1991 |
| Board of Directors | 2001 – 2017 |
| Board of Directors | 1941 – 2001 |
| Board of Directors | 1941 – 1994 |
| Board of Directors | 2007 – 2021 |
| Board of Directors | 2004 – 2013 |
| Board of Directors | 1941 – 2004 |