| Current (2) |
| Chairman | 2024 |
| Board of Directors | 2022 |
| Former (25) |
| Chairman | 1982 – 1988 |
| Board of Directors | 2016 – 2023 |
| Chairman | 2022 – 2022 |
| Board of Directors | 1982 – 1989 |
| Board of Directors | 1982 – 1989 |
| Board of Directors | 1982 – 1999 |
| Board of Directors | 2016 – 2016 |
| Board of Directors | 2004 – 2004 |
| Board of Directors | 1982 – 1999 |
| Board of Directors | 2002 – 2005 |
| Board of Directors | 2024 – 2025 |
| Board of Directors | 1982 – 2002 |
| Board of Directors | 2008 – 2014 |
| Board of Directors | 1982 – 1988 |
| Board of Directors | 1982 – 1994 |
| Board of Directors | 1982 – 2000 |
| Board of Directors | 2000 – 2009 |
| Board of Directors | 1982 – 1999 |
| Board of Directors | 1999 – 2002 |
| Board of Directors | 2023 – 2023 |
| Board of Directors | 2016 – 2017 |
| Board of Directors | 1982 – 1999 |
| Board of Directors | 1982 – 1988 |
| Board of Directors | 1982 – 1997 |
| Board of Directors | 2016 – 2017 |