| Deputy Chairman | 1992 – 1999 |
| Board of Directors | 2001 – 2010 |
| Chairman | 2014 – 2015 |
| Deputy Chairman | 2014 – 2015 |
| Deputy Chairman | 2010 – 2011 |
| Board of Directors | 1992 – 1996 |
| Board of Directors | 1992 – 1996 |
| Board of Directors | 1999 – 2007 |
| Board of Directors | 1992 – 1999 |
| Board of Directors | 2013 – 2014 |
| Board of Directors | 2001 – 2004 |
| Board of Directors | 2004 – 2006 |
| Chairman | 1999 – 2001 |
| Board of Directors | 1992 – 2014 |
| Board of Directors | 2014 – 2015 |
| Board of Directors | 2011 – 2014 |
| Chairman | 2013 – 2014 |
| Chairman | 2007 – 2013 |
| Board of Directors | 1992 – 1999 |
| Board of Directors | 2007 – 2011 |
| Board of Directors | 1992 – 1999 |