| Board of Directors | 1989 – 1991 |
| Board of Directors | 1989 – 1990 |
| Board of Directors | 1989 – 1999 |
| Board of Directors | 1999 – 2008 |
| Board of Directors | 1989 – 1999 |
| Chairman | 2009 – 2013 |
| Board of Directors | 2010 – 2013 |
| Board of Directors | 1989 – 1994 |
| Board of Directors | 1989 – 1994 |
| Board of Directors | 1989 – 1991 |
| Board of Directors | 1989 – 1994 |
| Board of Directors | 1989 – 1993 |
| Chairman | 2004 – 2008 |
| Board of Directors | 1989 – 1996 |
| Board of Directors | 2008 – 2013 |
| Board of Directors | 2010 – 2013 |
| Board of Directors | 1989 – 2004 |
| Chairman | 1989 – 1993 |
| Board of Directors | 2008 – 2009 |
| Board of Directors | 1989 – 1991 |
| Board of Directors | 2008 – 2010 |
| Board of Directors | 1989 – 1993 |
| Board of Directors | 1989 – 1991 |
| Chairman | 1989 – 1990 |
| Chairman | 1989 – 2004 |
| Board of Directors | 1999 – 2004 |
| Board of Directors | 1989 – 1990 |