| Current (2) |
| Chairman | 2019 |
| Board of Directors | 2021 |
| Former (24) |
| Chairman | 2000 – 2001 |
| Chairman | 2006 – 2010 |
| Chairman | 2015 – 2016 |
| Board of Directors | 2006 – 2009 |
| Board of Directors | 2009 – 2010 |
| Deputy Chairman | 1999 – 1999 |
| Chairman | 2017 – 2018 |
| Board of Directors | 2010 – 2011 |
| Board of Directors | 2010 – 2022 |
| Board of Directors | 2021 – 2022 |
| Chairman | 2016 – 2017 |
| Board of Directors | 2000 – 2006 |
| Board of Directors | 1999 – 2000 |
| Chairman | 1998 – 2000 |
| Chairman | 2000 – 2000 |
| Chairman | 2018 – 2019 |
| Board of Directors | 1998 – 2000 |
| Chairman | 2014 – 2015 |
| Chairman | 2001 – 2004 |
| Chairman | 2010 – 2010 |
| Board of Directors | 2006 – 2010 |
| Board of Directors | 2000 – 2006 |
| Board of Directors | 1998 – 2000 |
| Chairman | 2010 – 2014 |