| Current (1) |
| Chairman | 2015 |
| Former (14) |
| Board of Directors | 2020 – 2024 |
| Board of Directors | 2014 – 2016 |
| Chairman | 2012 – 2015 |
| Board of Directors | 2000 – 2002 |
| Board of Directors | 2012 – 2012 |
| Board of Directors | 2016 – 2020 |
| Chairman | 2007 – 2012 |
| Board of Directors | 2007 – 2011 |
| Deputy Chairman | 2006 – 2007 |
| Chairman | 2006 – 2007 |
| Chairman | 2012 – 2012 |
| Deputy Chairman | 2011 – 2012 |
| Board of Directors | 2005 – 2006 |
| Board of Directors | 2001 – 2002 |