| Former (22) |
| Board of Directors | 1989 – 1998 |
| Deputy Chairman | 2012 – 2015 |
| Deputy Chairman | 2019 – 2023 |
| Chairman | 2010 – 2011 |
| Chairman | 2011 – 2019 |
| Board of Directors | 2001 – 2002 |
| Board of Directors | 2019 – 2023 |
| Board of Directors | 1999 – 2001 |
| Board of Directors | 1989 – 1993 |
| Board of Directors | 2010 – 2017 |
| Board of Directors | 2003 – 2005 |
| Board of Directors | 2006 – 2010 |
| Deputy Chairman | 1989 – 1991 |
| Board of Directors | 1999 – 2003 |
| Board of Directors | 2001 – 2003 |
| Chairman | 2019 – 2023 |
| Board of Directors | 1989 – 2009 |
| Board of Directors | 2008 – 2010 |
| Board of Directors | 1989 – 1999 |
| Board of Directors | 2003 – 2008 |
| Chairman | 2009 – 2010 |
| Chairman | 1989 – 2004 |
