| Current (2) |
| Chairman | 2019 |
| Board of Directors | 2019 |
| Former (14) |
| Chairman | 2001 – 2002 |
| Board of Directors | 2002 – 2013 |
| Board of Directors | 2010 – 2013 |
| Board of Directors | 2002 – 2003 |
| Board of Directors | 2008 – 2013 |
| Board of Directors | 2002 – 2010 |
| Board of Directors | 2012 – 2013 |
| Board of Directors | 2017 – 2019 |
| Board of Directors | 2013 – 2017 |
| Chairman | 2012 – 2013 |
| Board of Directors | 2010 – 2012 |
| Chairman | 2002 – 2012 |
| Board of Directors | 2002 – 2005 |
| Board of Directors | 2001 – 2002 |