| Current (1) |
| Management | 2020 |
| Former (45) |
| Management | 1998 – 1999 |
| Management | 1975 – 1993 |
| Management | 1975 – 1998 |
| Deputy | 1975 – 1989 |
| Management | 2018 – 2020 |
| Deputy | 2006 – 2008 |
| Management | 1975 – 1989 |
| Deputy | 2003 – 2004 |
| Management | 1999 – 2001 |
| Management | 2013 – 2016 |
| Management | 1997 – 1997 |
| Audit | 1975 – 1991 |
| Management | 1975 – 1994 |
| Management | 1999 – 2001 |
| Deputy | 1975 – 1991 |
| Audit | 1975 – 1993 |
| Management | 1975 – 1993 |
| Deputy | 1975 – 1991 |
| Deputy | 2012 – 2014 |
| Management | 2001 – 2001 |
| Management | 2000 – 2001 |
| Chief Executive Officer | 2005 – 2015 |
| Management | 1975 – 1993 |
| Management | 1975 – 1994 |
| Deputy | 1975 – 1990 |
| Audit | 1975 – 1993 |
| Deputy | 1998 – 2000 |
| Management | 2017 – 2018 |
| Management | 2000 – 2001 |
| Deputy | 1975 – 1993 |
| Management | 2013 – 2013 |
| Management | 2004 – 2006 |
| Chief Executive Officer | 2004 – 2005 |
| Management | 2016 – 2017 |
| Management | 1975 – 1999 |
| Deputy | 1975 – 1993 |
| Deputy | 2001 – 2001 |
| Deputy | 1975 – 1993 |
| Audit | 1975 – 1990 |
| Management | 2000 – 2001 |
| Management | 1975 – 1998 |
| Management | 1997 – 2000 |
| Management | 2001 – 2001 |
| Deputy | 1975 – 1994 |
| Management | 1998 – 2000 |
