| Current (3) |
| Board of Directors | 2025 |
| Chairman | 2025 |
| Board of Directors | 2024 |
| Former (18) |
| Deputy Chairman | 2018 – 2019 |
| Board of Directors | 1979 – 1994 |
| Board of Directors | 1979 – 1990 |
| Chairman | 2019 – 2023 |
| Board of Directors | 1979 – 1987 |
| Board of Directors | 1979 – 1988 |
| Deputy Chairman | 2022 – 2025 |
| Board of Directors | 1979 – 1992 |
| Chairman | 1979 – 1992 |
| Board of Directors | 2019 – 2021 |
| Board of Directors | 1979 – 2006 |
| Chairman | 2023 – 2025 |
| Board of Directors | 1979 – 1988 |
| Chairman | 2018 – 2019 |
| Board of Directors | 1979 – 1992 |
| Board of Directors | 1979 – 1990 |
| Board of Directors | 2006 – 2019 |
| Deputy Chairman | 1979 – 1992 |