| Former (23) |
| Chairman | 1990 – 1999 |
| Board of Directors | 1990 – 1991 |
| Board of Directors | 1990 – 1999 |
| Board of Directors | 2015 – 2018 |
| Chairman | 2001 – 2002 |
| Board of Directors | 1990 – 1992 |
| Board of Directors | 1999 – 2001 |
| Chairman | 2018 – 2022 |
| Board of Directors | 2002 – 2013 |
| Chairman | 2015 – 2018 |
| Chairman | 1999 – 1999 |
| Board of Directors | 1990 – 1991 |
| Board of Directors | 1990 – 1992 |
| Board of Directors | 2018 – 2022 |
| Chairman | 1999 – 2001 |
| Board of Directors | 1990 – 1991 |
| Chairman | 2002 – 2015 |
| Chairman | 2015 – 2015 |
| Board of Directors | 2022 – 2023 |
| Board of Directors | 1990 – 1996 |
| Chairman | 1990 – 1991 |
| Chairman | 2022 – 2023 |
| Board of Directors | 1990 – 1999 |