| Former (16) |
| Chairman | 2012 – 2013 |
| Board of Directors | 2008 – 2009 |
| Chairman | 2009 – 2011 |
| Board of Directors | 1998 – 2003 |
| Chairman | 2011 – 2012 |
| Board of Directors | 2003 – 2008 |
| Board of Directors | 2008 – 2009 |
| Board of Directors | 2000 – 2008 |
| Board of Directors | 2000 – 2008 |
| Board of Directors | 1999 – 2005 |
| Board of Directors | 2012 – 2013 |
| Board of Directors | 1998 – 1998 |
| Board of Directors | 1998 – 2003 |
| Board of Directors | 2008 – 2009 |
| Board of Directors | 2009 – 2013 |
| Board of Directors | 1993 – 1998 |