| Former (16) |
| Chairman | 2010 – 2013 |
| Board of Directors | 2013 – 2016 |
| Chairman | 2015 – 2016 |
| Board of Directors | 1998 – 1999 |
| Board of Directors | 2005 – 2006 |
| Chairman | 2006 – 2008 |
| Board of Directors | 2001 – 2004 |
| Board of Directors | 2011 – 2013 |
| Board of Directors | 2013 – 2016 |
| Board of Directors | 1999 – 2001 |
| Chairman | 2013 – 2015 |
| Board of Directors | 2008 – 2011 |
| Board of Directors | 1998 – 1999 |
| Board of Directors | 2007 – 2008 |
| Board of Directors | 1999 – 1999 |
| Board of Directors | 1999 – 2006 |