| Board of Directors | 1987 – 1995 |
| Board of Directors | 2011 – 2014 |
| Board of Directors | 1987 – 1992 |
| Chairman | 1987 – 1989 |
| Board of Directors | 1999 – 2005 |
| Board of Directors | 2005 – 2014 |
| Board of Directors | 1995 – 1997 |
| Board of Directors | 2005 – 2011 |
| Board of Directors | 1987 – 1995 |
| Board of Directors | 1987 – 1989 |
| Board of Directors | 1987 – 1987 |
| Chairman | 1987 – 1995 |
| Board of Directors | 1995 – 1996 |
| Board of Directors | 1997 – 2005 |
| Chairman | 1995 – 2005 |
| Chairman | 2005 – 2009 |
| Board of Directors | 1994 – 1995 |
| Board of Directors | 1987 – 1991 |
| Chairman | 2009 – 2014 |
| Board of Directors | 1987 – 1987 |
| Board of Directors | 1987 – 1989 |
| Board of Directors | 1987 – 1987 |
| Board of Directors | 2000 – 2001 |