| Current (3) |
| Chairman | 2025 |
| Board of Directors | 2025 |
| Board of Directors | 2021 |
| Former (24) |
| Board of Directors | 1996 – 1997 |
| Board of Directors | 2020 – 2022 |
| Board of Directors | 2009 – 2011 |
| Chairman | 2021 – 2024 |
| Board of Directors | 1980 – 1996 |
| Board of Directors | 2007 – 2008 |
| Chairman | 2014 – 2021 |
| Chairman | 2001 – 2002 |
| Board of Directors | 1980 – 1991 |
| Board of Directors | 1997 – 1998 |
| Board of Directors | 1980 – 1988 |
| Chairman | 1995 – 1998 |
| Board of Directors | 1980 – 1990 |
| Board of Directors | 2002 – 2020 |
| Board of Directors | 2002 – 2002 |
| Board of Directors | 1980 – 1995 |
| Chairman | 2002 – 2008 |
| Board of Directors | 1980 – 1989 |
| Board of Directors | 1997 – 1998 |
| Board of Directors | 1980 – 1988 |
| Chairman | 2008 – 2009 |
| Board of Directors | 2012 – 2013 |
| Board of Directors | 2021 – 2022 |
| Chairman | 2009 – 2014 |