| Current (3) |
| Chairman | 2024 |
| Board of Directors | 2016 |
| Board of Directors | 2024 |
| Former (22) |
| Board of Directors | 1989 – 1989 |
| Chairman | 1989 – 1998 |
| Board of Directors | 2003 – 2005 |
| Board of Directors | 2016 – 2019 |
| Board of Directors | 1989 – 2001 |
| Board of Directors | 2001 – 2003 |
| Chairman | 2019 – 2022 |
| Board of Directors | 2014 – 2016 |
| Board of Directors | 1989 – 1992 |
| Board of Directors | 1989 – 1992 |
| Chairman | 2022 – 2024 |
| Chairman | 2016 – 2019 |
| Board of Directors | 1989 – 1998 |
| Chairman | 2001 – 2003 |
| Board of Directors | 1989 – 1993 |
| Chairman | 1989 – 1989 |
| Chairman | 1998 – 2001 |
| Board of Directors | 2005 – 2014 |
| Board of Directors | 1989 – 1990 |
| Chairman | 2008 – 2016 |
| Chairman | 2003 – 2008 |
| Board of Directors | 1989 – 1998 |