| Board of Directors | 1987 – 1992 |
| Chairman | 2001 – 2005 |
| Board of Directors | 1997 – 2000 |
| Chairman | 1987 – 1992 |
| Board of Directors | 1987 – 1989 |
| Board of Directors | 1999 – 1999 |
| Board of Directors | 1987 – 1992 |
| Board of Directors | 1987 – 1992 |
| Board of Directors | 1987 – 1999 |
| Board of Directors | 2005 – 2006 |
| Board of Directors | 1987 – 1992 |
| Chairman | 1987 – 1999 |
| Board of Directors | 1987 – 1998 |
| Board of Directors | 1997 – 2000 |
| Board of Directors | 2006 – 2006 |
| Chairman | 1997 – 2000 |
| Chairman | 2005 – 2007 |
| Board of Directors | 2000 – 2005 |
| Board of Directors | 2001 – 2005 |
| Board of Directors | 2000 – 2001 |
| Board of Directors | 1987 – 1991 |
| Chairman | 1987 – 1989 |
| Deputy Chairman | 1999 – 1999 |
| Board of Directors | 2006 – 2007 |
| Chairman | 2000 – 2001 |
| Board of Directors | 2006 – 2007 |