| Current (5) |
| Board of Directors | 2014 |
| Board of Directors | 2013 |
| Board of Directors | 2017 |
| Chairman | 2009 |
| Board of Directors | 2014 |
| Former (13) |
| Board of Directors | 2001 – 2008 |
| Board of Directors | 2007 – 2010 |
| Board of Directors | 2002 – 2010 |
| Board of Directors | 1998 – 2002 |
| Board of Directors | 2010 – 2013 |
| Board of Directors | 2005 – 2017 |
| Board of Directors | 1997 – 2000 |
| Board of Directors | 2002 – 2014 |
| Board of Directors | 2010 – 2014 |
| Board of Directors | 1997 – 2007 |
| Board of Directors | 2013 – 2013 |
| Board of Directors | 1998 – 2002 |
| Chairman | 1997 – 2009 |