| Current (3) |
| Board of Directors | 2026 |
| Chairman | 2026 |
| Deputy Chairman | 2021 |
| Former (13) |
| Board of Directors | 1958 – 2009 |
| Board of Directors | 2017 – 2021 |
| Deputy Chairman | 2011 – 2020 |
| Chairman | 2017 – 2026 |
| Board of Directors | 1958 – 1995 |
| Deputy Chairman | 2020 – 2021 |
| Board of Directors | 1958 – 1998 |
| Board of Directors | 2020 – 2021 |
| Chairman | 2011 – 2017 |
| Board of Directors | 1958 – 2003 |
| Board of Directors | 2021 – 2024 |
| Board of Directors | 1958 – 2008 |
| Board of Directors | 2013 – 2016 |