| Current (1) |
| Chief Executive Officer | 2024 |
| Former (18) |
| Deputy | 2006 – 2010 |
| Chief Executive Officer | 2020 – 2023 |
| Chief Executive Officer | 2015 – 2020 |
| Chief Executive Officer | 2000 – 2001 |
| Audit | 1992 – 1993 |
| Chief Executive Officer | 2024 – 2024 |
| Deputy | 1998 – 1999 |
| Chief Executive Officer | 2001 – 2004 |
| Deputy | 1995 – 1995 |
| Deputy | 1992 – 1999 |
| Management | 2000 – 2000 |
| Deputy | 1998 – 1999 |
| Chief Executive Officer | 2009 – 2015 |
| Chief Executive Officer | 2004 – 2009 |
| Chief Executive Officer | 2023 – 2024 |
| Deputy | 2010 – 2015 |
| Deputy | 2000 – 2002 |
| Management | 1992 – 1993 |