| Board of Directors | 1988 – 1990 |
| Board of Directors | 2011 – 2012 |
| Board of Directors | 1988 – 1990 |
| Board of Directors | 2009 – 2011 |
| Chairman | 2011 – 2012 |
| Board of Directors | 1988 – 2009 |
| Board of Directors | 2009 – 2011 |
| Board of Directors | 1988 – 2004 |
| Board of Directors | 2011 – 2012 |
| Chairman | 2009 – 2011 |
| Board of Directors | 1988 – 2011 |
| Board of Directors | 1988 – 1990 |
| Board of Directors | 1988 – 1990 |
| Board of Directors | 1988 – 1996 |
| Board of Directors | 1988 – 1996 |
| Board of Directors | 1988 – 1989 |