| Current (4) |
| Deputy Chairman | 2019 |
| Chairman | 2019 |
| Board of Directors | 2020 |
| Board of Directors | 2022 |
| Former (12) |
| Board of Directors | 2000 – 2012 |
| Board of Directors | 1989 – 1989 |
| Board of Directors | 1989 – 1990 |
| Board of Directors | 2015 – 2021 |
| Board of Directors | 1994 – 1998 |
| Board of Directors | 1989 – 1994 |
| Board of Directors | 1989 – 1994 |
| Board of Directors | 2001 – 2004 |
| Board of Directors | 2000 – 2002 |
| Board of Directors | 1989 – 2000 |
| Chairman | 1989 – 1989 |
| Board of Directors | 2012 – 2018 |