| Board of Directors | 2013 – 2013 |
| Board of Directors | 2006 – 2012 |
| Chairman | 2012 – 2013 |
| Board of Directors | 1985 – 1992 |
| Board of Directors | 1985 – 1996 |
| Board of Directors | 1985 – 2011 |
| Board of Directors | 1985 – 1996 |
| Board of Directors | 2013 – 2013 |
| Board of Directors | 2012 – 2013 |
| Board of Directors | 1985 – 1996 |
| Board of Directors | 1985 – 2006 |
| Chairman | 2013 – 2013 |
| Board of Directors | 2011 – 2012 |
| Board of Directors | 2011 – 2012 |
| Board of Directors | 1996 – 2011 |
| Board of Directors | 1985 – 2006 |