| Current (3) |
| Board of Directors | 2023 |
| Board of Directors | 2021 |
| Chairman | 2017 |
| Former (40) |
| Board of Directors | 2008 – 2009 |
| Board of Directors | 2001 – 2008 |
| Board of Directors | 2006 – 2006 |
| Board of Directors | 2004 – 2014 |
| Board of Directors | 1991 – 1996 |
| Board of Directors | 2013 – 2016 |
| Board of Directors | 2006 – 2010 |
| Board of Directors | 2001 – 2007 |
| Board of Directors | 1996 – 2011 |
| Board of Directors | 1994 – 1999 |
| Deputy Chairman | 2019 – 2021 |
| Board of Directors | 1994 – 1996 |
| Board of Directors | 2007 – 2014 |
| Board of Directors | 2009 – 2018 |
| Board of Directors | 2008 – 2014 |
| Board of Directors | 2002 – 2018 |
| Board of Directors | 2011 – 2013 |
| Board of Directors | 1994 – 2005 |
| Board of Directors | 1994 – 2002 |
| Board of Directors | 2001 – 2004 |
| Board of Directors | 2018 – 2020 |
| Board of Directors | 2016 – 2018 |
| Board of Directors | 1991 – 2001 |
| Board of Directors | 2021 – 2023 |
| Board of Directors | 1996 – 2020 |
| Board of Directors | 2018 – 2021 |
| Board of Directors | 2014 – 2017 |
| Deputy Chairman | 2015 – 2019 |
| Board of Directors | 2005 – 2006 |
| Board of Directors | 1999 – 2001 |
| Board of Directors | 2002 – 2005 |
| Chairman | 1994 – 1998 |
| Deputy Chairman | 2008 – 2015 |
| Board of Directors | 1999 – 2002 |
| Board of Directors | 2009 – 2019 |
| Board of Directors | 1999 – 2016 |
| Board of Directors | 1994 – 2001 |
| Board of Directors | 2014 – 2020 |
| Chairman | 1994 – 2017 |
| Board of Directors | 1994 – 1995 |