| Current (6) |
| Chairman | 2022 |
| Board of Directors | 2022 |
| Board of Directors | 2020 |
| Board of Directors | 2019 |
| Deputy Chairman | 2022 |
| Board of Directors | 2013 |
| Former (21) |
| Board of Directors | 2009 – 2010 |
| Chairman | 2006 – 2012 |
| Deputy Chairman | 2012 – 2014 |
| Board of Directors | 2010 – 2013 |
| Board of Directors | 2002 – 2006 |
| Board of Directors | 2010 – 2012 |
| Board of Directors | 2012 – 2018 |
| Board of Directors | 1997 – 2001 |
| Board of Directors | 2019 – 2021 |
| Board of Directors | 1998 – 2001 |
| Board of Directors | 2001 – 2005 |
| Board of Directors | 2018 – 2022 |
| Chairman | 2012 – 2020 |
| Board of Directors | 2000 – 2001 |
| Board of Directors | 1997 – 1998 |
| Board of Directors | 2010 – 2016 |
| Board of Directors | 1997 – 2000 |
| Board of Directors | 2005 – 2008 |
| Chairman | 1997 – 2002 |
| Board of Directors | 2013 – 2019 |
| Board of Directors | 1997 – 2004 |