| Current (3) |
| Board of Directors | 2022 |
| Board of Directors | 2012 |
| Chairman | 2016 |
| Former (16) |
| Board of Directors | 2017 – 2022 |
| Board of Directors | 2011 – 2012 |
| Board of Directors | 2009 – 2011 |
| Chairman | 2002 – 2003 |
| Chairman | 1999 – 2000 |
| Board of Directors | 2015 – 2017 |
| Board of Directors | 2011 – 2015 |
| Chairman | 2004 – 2010 |
| Board of Directors | 2004 – 2008 |
| Board of Directors | 1999 – 2001 |
| Chairman | 2010 – 2012 |
| Chairman | 2003 – 2004 |
| Chairman | 2015 – 2016 |
| Board of Directors | 2003 – 2004 |
| Board of Directors | 2003 – 2003 |
| Chairman | 2012 – 2015 |