| Chairman | 2006 – 2007 |
| Board of Directors | 2002 – 2008 |
| Board of Directors | 1997 – 2002 |
| Board of Directors | 2016 – 2017 |
| Board of Directors | 2004 – 2006 |
| Board of Directors | 2006 – 2016 |
| Chairman | 1997 – 2006 |
| Board of Directors | 2002 – 2006 |
| Chairman | 2007 – 2011 |
| Chairman | 2016 – 2017 |
| Board of Directors | 1997 – 2002 |
| Board of Directors | 2007 – 2014 |
| Board of Directors | 2016 – 2017 |
| Board of Directors | 2016 – 2017 |
| Board of Directors | 2008 – 2016 |
| Board of Directors | 2015 – 2016 |
| Chairman | 2011 – 2016 |