| Former (20) |
| Board of Directors | 2010 – 2010 |
| Deputy Chairman | 2000 – 2006 |
| Board of Directors | 2016 – 2026 |
| Board of Directors | 1969 – 2001 |
| Board of Directors | 1969 – 2006 |
| Board of Directors | 2011 – 2017 |
| Chairman | 2025 – 2026 |
| Board of Directors | 2012 – 2015 |
| Board of Directors | 2015 – 2023 |
| Board of Directors | 1969 – 2000 |
| Board of Directors | 2025 – 2026 |
| Chairman | 2010 – 2022 |
| Board of Directors | 2010 – 2011 |
| Board of Directors | 1969 – 2002 |
| Board of Directors | 1969 – 2026 |
| Board of Directors | 1969 – 1996 |
| Chairman | 2022 – 2025 |
| Board of Directors | 2006 – 2016 |
| Deputy Chairman | 2022 – 2026 |
| Board of Directors | 2002 – 2012 |