| Current (2) |
| Chairman | 2022 |
| Board of Directors | 2022 |
| Former (20) |
| Board of Directors | 1994 – 1995 |
| Chairman | 1996 – 1999 |
| Chairman | 2012 – 2014 |
| Chairman | 2022 – 2022 |
| Board of Directors | 2014 – 2016 |
| Chairman | 2014 – 2020 |
| Chairman | 2009 – 2011 |
| Board of Directors | 2001 – 2006 |
| Chairman | 1999 – 2001 |
| Chairman | 1994 – 1997 |
| Board of Directors | 1999 – 2003 |
| Board of Directors | 1994 – 1998 |
| Board of Directors | 1994 – 1996 |
| Board of Directors | 2019 – 2020 |
| Chairman | 2008 – 2009 |
| Board of Directors | 2006 – 2014 |
| Board of Directors | 2020 – 2022 |
| Chairman | 2011 – 2012 |
| Chairman | 1994 – 1995 |
| Board of Directors | 2016 – 2018 |