| Board of Directors | 1991 – 1994 |
| Board of Directors | 1995 – 2011 |
| Board of Directors | 1991 – 1993 |
| Board of Directors | 2005 – 2011 |
| Board of Directors | 1991 – 1996 |
| Board of Directors | 1991 – 2005 |
| Board of Directors | 2000 – 2001 |
| Board of Directors | 2005 – 2011 |
| Board of Directors | 1991 – 1994 |
| Board of Directors | 1997 – 1998 |
| Board of Directors | 1991 – 1997 |
| Board of Directors | 2002 – 2005 |
| Board of Directors | 1999 – 2000 |
| Board of Directors | 2000 – 2002 |
| Chairman | 1991 – 1993 |
| Board of Directors | 1991 – 1993 |