| Current (4) |
| Board of Directors | 2025 |
| Board of Directors | 2004 |
| Deputy Chairman | 2025 |
| Chairman | 2023 |
| Former (12) |
| Chairman | 2018 – 2023 |
| Board of Directors | 2018 – 2025 |
| Deputy Chairman | 1992 – 1993 |
| Chairman | 1997 – 2004 |
| Board of Directors | 2012 – 2014 |
| Board of Directors | 1997 – 1999 |
| Chairman | 1992 – 1997 |
| Board of Directors | 2004 – 2012 |
| Board of Directors | 1999 – 2003 |
| Chairman | 2010 – 2018 |
| Board of Directors | 1992 – 1996 |
| Board of Directors | 2010 – 2023 |