| Former (17) |
| Chairman | 1996 – 1996 |
| Board of Directors | 2002 – 2003 |
| Board of Directors | 1998 – 1999 |
| Deputy Chairman | 2017 – 2018 |
| Board of Directors | 1996 – 1997 |
| Chairman | 2017 – 2019 |
| Board of Directors | 1999 – 2000 |
| Board of Directors | 2000 – 2001 |
| Board of Directors | 1996 – 2003 |
| Deputy Chairman | 2011 – 2016 |
| Board of Directors | 1996 – 2001 |
| Board of Directors | 2005 – 2009 |
| Board of Directors | 2001 – 2018 |
| Board of Directors | 1996 – 1996 |
| Board of Directors | 1996 – 2001 |
| Chairman | 1999 – 2017 |
| Deputy Chairman | 2001 – 2001 |
