| Board of Directors | 2003 – 2004 |
| Board of Directors | 1987 – 1996 |
| Board of Directors | 1987 – 2002 |
| Board of Directors | 1987 – 2003 |
| Board of Directors | 1987 – 1988 |
| Chairman | 2002 – 2003 |
| Board of Directors | 2004 – 2015 |
| Board of Directors | 1987 – 1989 |
| Chairman | 2004 – 2015 |
| Chairman | 2003 – 2004 |
| Board of Directors | 2003 – 2004 |
| Board of Directors | 2003 – 2004 |
| Board of Directors | 1996 – 2000 |
| Board of Directors | 1987 – 2002 |
| Board of Directors | 1987 – 2000 |
| Board of Directors | 1987 – 2002 |
| Board of Directors | 1987 – 2002 |
| Chairman | 1987 – 2002 |
| Board of Directors | 2004 – 2015 |
| Chairman | 1987 – 1988 |
| Board of Directors | 2000 – 2003 |
| Board of Directors | 1987 – 1988 |