| Current (2) |
| Chairman | 2026 |
| Board of Directors | 2024 |
| Former (19) |
| Chairman | 1999 – 2001 |
| Board of Directors | 1969 – 2002 |
| Board of Directors | 2017 – 2024 |
| Board of Directors | 1969 – 1991 |
| Chairman | 2001 – 2004 |
| Chairman | 2010 – 2010 |
| Chairman | 2024 – 2025 |
| Deputy Chairman | 2001 – 2002 |
| Board of Directors | 1969 – 2004 |
| Board of Directors | 2010 – 2010 |
| Chairman | 2014 – 2024 |
| Chairman | 2007 – 2010 |
| Board of Directors | 2010 – 2017 |
| Deputy Chairman | 1999 – 2000 |
| Board of Directors | 2006 – 2010 |
| Deputy Chairman | 2006 – 2007 |
| Chairman | 2004 – 2006 |
| Board of Directors | 1969 – 1991 |
| Board of Directors | 2004 – 2006 |