| Current (2) |
| Chairman | 2022 |
| Board of Directors | 2024 |
| Former (18) |
| Chairman | 2015 – 2018 |
| Board of Directors | 2000 – 2008 |
| Chairman | 2018 – 2019 |
| Chairman | 2001 – 2002 |
| Board of Directors | 1990 – 1996 |
| Board of Directors | 2015 – 2015 |
| Board of Directors | 2008 – 2012 |
| Board of Directors | 2022 – 2024 |
| Chairman | 2010 – 2012 |
| Board of Directors | 1990 – 1994 |
| Board of Directors | 2004 – 2006 |
| Chairman | 2019 – 2020 |
| Board of Directors | 1990 – 2001 |
| Board of Directors | 1990 – 1994 |
| Board of Directors | 2015 – 2019 |
| Chairman | 2003 – 2010 |
| Chairman | 2020 – 2022 |
| Board of Directors | 2006 – 2012 |
