| Current (2) |
| Board of Directors | 2025 |
| Chairman | 2026 |
| Former (22) |
| Board of Directors | 1948 – 1993 |
| Board of Directors | 1993 – 1994 |
| Board of Directors | 1948 – 1990 |
| Deputy Chairman | 2008 – 2009 |
| Board of Directors | 1996 – 1998 |
| Board of Directors | 2017 – 2020 |
| Board of Directors | 2020 – 2025 |
| Board of Directors | 1948 – 1996 |
| Board of Directors | 1948 – 1990 |
| Board of Directors | 2003 – 2006 |
| Board of Directors | 2000 – 2006 |
| Board of Directors | 2005 – 2017 |
| Board of Directors | 1998 – 2000 |
| Board of Directors | 2000 – 2009 |
| Chairman | 2023 – 2026 |
| Deputy Chairman | 2003 – 2005 |
| Board of Directors | 2017 – 2020 |
| Chairman | 2017 – 2020 |
| Board of Directors | 2020 – 2026 |
| Board of Directors | 2008 – 2009 |
| Chairman | 2020 – 2023 |
| Chairman | 1948 – 1998 |