| Board of Directors | 1991 – 1993 |
| Board of Directors | 2000 – 2003 |
| Board of Directors | 2022 – 2022 |
| Board of Directors | 2003 – 2006 |
| Chairman | 1991 – 1994 |
| Board of Directors | 2006 – 2007 |
| Board of Directors | 1991 – 1993 |
| Board of Directors | 1996 – 2000 |
| Board of Directors | 1991 – 1993 |
| Board of Directors | 1991 – 1995 |
| Chairman | 2010 – 2022 |
| Board of Directors | 2010 – 2022 |
| Board of Directors | 1997 – 1998 |
| Board of Directors | 2006 – 2010 |
| Board of Directors | 2003 – 2006 |
| Chairman | 2003 – 2006 |
| Board of Directors | 1995 – 1996 |
| Board of Directors | 1995 – 1996 |
| Board of Directors | 2006 – 2008 |
| Chairman | 1991 – 1998 |
| Board of Directors | 2008 – 2022 |
| Board of Directors | 2007 – 2010 |