| Former (20) |
| Board of Directors | 2011 – 2014 |
| Board of Directors | 2014 – 2018 |
| Board of Directors | 1995 – 2005 |
| Board of Directors | 2008 – 2009 |
| Chairman | 2009 – 2015 |
| Chairman | 2015 – 2019 |
| Board of Directors | 2010 – 2011 |
| Chairman | 2001 – 2009 |
| Board of Directors | 2001 – 2009 |
| Board of Directors | 2001 – 2006 |
| Chairman | 1998 – 2001 |
| Board of Directors | 2018 – 2019 |
| Board of Directors | 2005 – 2007 |
| Board of Directors | 2009 – 2010 |
| Chairman | 1995 – 1998 |
| Board of Directors | 2009 – 2019 |
| Board of Directors | 2007 – 2009 |
| Board of Directors | 1995 – 2001 |
| Deputy Chairman | 1995 – 2019 |
| Board of Directors | 2006 – 2009 |