| Current (2) |
| Chairman | 2016 |
| Board of Directors | 2024 |
| Former (25) |
| Board of Directors | 2016 – 2024 |
| Board of Directors | 1999 – 2003 |
| Board of Directors | 1992 – 2003 |
| Board of Directors | 2003 – 2007 |
| Board of Directors | 2003 – 2003 |
| Board of Directors | 2003 – 2007 |
| Chairman | 2009 – 2014 |
| Deputy Chairman | 2000 – 2003 |
| Board of Directors | 2007 – 2011 |
| Board of Directors | 1999 – 2003 |
| Board of Directors | 1999 – 2003 |
| Chairman | 2000 – 2000 |
| Board of Directors | 1992 – 2000 |
| Chairman | 2003 – 2003 |
| Board of Directors | 1997 – 1999 |
| Board of Directors | 1999 – 2002 |
| Board of Directors | 1997 – 1999 |
| Chairman | 2007 – 2009 |
| Board of Directors | 2011 – 2016 |
| Board of Directors | 2016 – 2016 |
| Chairman | 2015 – 2016 |
| Board of Directors | 2006 – 2007 |
| Board of Directors | 1999 – 1999 |
| Board of Directors | 2005 – 2006 |
| Board of Directors | 2011 – 2016 |