| Current (3) |
| Chairman | 2025 |
| Board of Directors | 2019 |
| Deputy Chairman | 2025 |
| Former (15) |
| Board of Directors | 1997 – 2009 |
| Board of Directors | 1989 – 2010 |
| Board of Directors | 2010 – 2012 |
| Board of Directors | 1998 – 2007 |
| Board of Directors | 1989 – 2005 |
| Board of Directors | 1989 – 1996 |
| Board of Directors | 2008 – 2019 |
| Chairman | 2009 – 2010 |
| Chairman | 2010 – 2012 |
| Board of Directors | 1989 – 1994 |
| Deputy Chairman | 2012 – 2019 |
| Chairman | 2019 – 2025 |
| Deputy Chairman | 2010 – 2012 |
| Board of Directors | 2005 – 2009 |
| Board of Directors | 2009 – 2010 |