| Current (3) |
| Board of Directors | 2021 |
| Board of Directors | 2023 |
| Chairman | 2025 |
| Former (29) |
| Board of Directors | 1996 – 2014 |
| Board of Directors | 1945 – 1988 |
| Board of Directors | 2019 – 2021 |
| Board of Directors | 1945 – 1988 |
| Chairman | 2015 – 2016 |
| Chairman | 1945 – 1988 |
| Board of Directors | 1945 – 1988 |
| Board of Directors | 1945 – 1988 |
| Board of Directors | 1945 – 1988 |
| Board of Directors | 1945 – 1998 |
| Board of Directors | 2019 – 2021 |
| Chairman | 2016 – 2023 |
| Chairman | 2000 – 2009 |
| Deputy Chairman | 1945 – 1988 |
| Board of Directors | 1945 – 1988 |
| Board of Directors | 2021 – 2023 |
| Board of Directors | 2007 – 2009 |
| Board of Directors | 2017 – 2019 |
| Board of Directors | 1945 – 1996 |
| Board of Directors | 1996 – 2001 |
| Board of Directors | 2004 – 2005 |
| Board of Directors | 2014 – 2015 |
| Board of Directors | 2000 – 2003 |
| Board of Directors | 2013 – 2014 |
| Board of Directors | 1945 – 1998 |
| Chairman | 2015 – 2015 |
| Board of Directors | 2000 – 2013 |
| Chairman | 2023 – 2023 |
| Board of Directors | 1998 – 2013 |