| Current (5) |
| Board of Directors | 2020 |
| Chairman | 2023 |
| Board of Directors | 2024 |
| Board of Directors | 2006 |
| Board of Directors | 2023 |
| Former (17) |
| Chairman | 1989 – 2000 |
| Board of Directors | 2004 – 2021 |
| Board of Directors | 1989 – 1992 |
| Board of Directors | 1989 – 1994 |
| Board of Directors | 1989 – 1992 |
| Chairman | 2000 – 2001 |
| Chairman | 2002 – 2004 |
| Board of Directors | 2011 – 2023 |
| Chairman | 2006 – 2011 |
| Board of Directors | 1989 – 1992 |
| Board of Directors | 1989 – 1991 |
| Board of Directors | 2016 – 2023 |
| Deputy Chairman | 1989 – 2004 |
| Board of Directors | 2002 – 2004 |
| Board of Directors | 2002 – 2004 |
| Board of Directors | 2000 – 2002 |
| Board of Directors | 2023 – 2024 |