| Former (19) |
| Board of Directors | 2008 – 2014 |
| Board of Directors | 2004 – 2013 |
| Board of Directors | 1997 – 2006 |
| Deputy Chairman | 2006 – 2011 |
| Board of Directors | 1994 – 2002 |
| Board of Directors | 1999 – 2011 |
| Board of Directors | 1994 – 2007 |
| Board of Directors | 2008 – 2016 |
| Board of Directors | 1997 – 2007 |
| Board of Directors | 1994 – 2003 |
| Chairman | 2013 – 2016 |
| Board of Directors | 1994 – 2003 |
| Board of Directors | 1997 – 2010 |
| Chairman | 1994 – 2013 |
| Board of Directors | 2005 – 2010 |
| Board of Directors | 2006 – 2010 |
| Board of Directors | 1999 – 2011 |
| Board of Directors | 2014 – 2016 |
| Board of Directors | 2007 – 2011 |