| Former (19) |
| Board of Directors | 2008 – 2012 |
| Deputy Chairman | 2024 – 2025 |
| Chairman | 1997 – 2003 |
| Board of Directors | 2017 – 2017 |
| Board of Directors | 2013 – 2017 |
| Deputy Chairman | 2022 – 2023 |
| Chairman | 2003 – 2005 |
| Chairman | 1993 – 1995 |
| Board of Directors | 2007 – 2017 |
| Chairman | 2005 – 2010 |
| Board of Directors | 1992 – 1999 |
| Chairman | 2010 – 2023 |
| Chairman | 2023 – 2024 |
| Board of Directors | 1999 – 2005 |
| Board of Directors | 2005 – 2007 |
| Board of Directors | 2023 – 2025 |
| Board of Directors | 2013 – 2017 |
| Chairman | 2024 – 2025 |
| Chairman | 1992 – 1993 |