| Board of Directors | 1987 – 1988 |
| Board of Directors | 1987 – 1999 |
| Board of Directors | 2001 – 2002 |
| Board of Directors | 1987 – 1999 |
| Board of Directors | 1987 – 2001 |
| Board of Directors | 1987 – 2001 |
| Chairman | 2007 – 2010 |
| Board of Directors | 1999 – 2010 |
| Board of Directors | 2001 – 2007 |
| Board of Directors | 2001 – 2005 |
| Board of Directors | 1987 – 1988 |
| Board of Directors | 2007 – 2010 |
| Board of Directors | 1987 – 1988 |