| Current (1) |
| Chief Executive Officer | 2024 |
| Former (22) |
| Management | 1965 – 1988 |
| Audit | 2007 – 2008 |
| Deputy | 1965 – 1999 |
| Deputy | 2003 – 2007 |
| Deputy | 1965 – 1999 |
| Audit | 2001 – 2006 |
| Deputy | 2007 – 2012 |
| Chief Executive Officer | 2018 – 2018 |
| Chief Executive Officer | 2022 – 2023 |
| Management | 2000 – 2002 |
| Chief Executive Officer | 2010 – 2018 |
| Deputy | 1965 – 1991 |
| Chief Executive Officer | 2002 – 2010 |
| Chief Executive Officer | 2023 – 2023 |
| Chief Executive Officer | 2018 – 2022 |
| Deputy | 1965 – 1999 |
| Management | 2000 – 2001 |
| Deputy | 2003 – 2007 |
| Deputy | 1965 – 1991 |
| Chief Executive Officer | 1965 – 2001 |
| Deputy | 1999 – 2007 |
| Management | 2000 – 2001 |