| Current (6) |
| Founder | 1987 |
| Founder | 1987 |
| Chief Executive Officer | 2026 |
| Deputy | 2026 |
| Deputy | 2025 |
| Founder | 1987 |
| Former (50) |
| Management | 2009 – 2012 |
| Management | 2002 – 2003 |
| Management | 2001 – 2003 |
| Management | 2005 – 2012 |
| Deputy | 2020 – 2021 |
| Deputy | 2018 – 2020 |
| Management | 2013 – 2019 |
| Deputy | 2023 – 2025 |
| Deputy | 2017 – 2018 |
| Deputy | 2009 – 2013 |
| Chief Executive Officer | 2018 – 2019 |
| Deputy | 1987 – 1997 |
| Management | 2021 – 2024 |
| Deputy | 2001 – 2005 |
| Management | 1987 – 2003 |
| Audit | 1987 – 1989 |
| Deputy | 2021 – 2023 |
| Chief Executive Officer | 2012 – 2018 |
| Deputy | 2001 – 2005 |
| Chief Executive Officer | 1987 – 1999 |
| Chief Executive Officer | 2003 – 2012 |
| Management | 1987 – 1999 |
| Management | 2003 – 2003 |
| Deputy | 1987 – 1993 |
| Deputy | 2009 – 2013 |
| Deputy | 2017 – 2018 |
| Deputy | 2025 – 2026 |
| Management | 2003 – 2007 |
| Chief Executive Officer | 2000 – 2001 |
| Deputy | 2009 – 2013 |
| Deputy | 2013 – 2016 |
| Chief Executive Officer | 1987 – 2000 |
| Management | 1999 – 2001 |
| Management | 2001 – 2005 |
| Chief Executive Officer | 2012 – 2012 |
| Deputy | 2013 – 2016 |
| Management | 1987 – 2011 |
| Deputy | 1987 – 1996 |
| Deputy | 2009 – 2011 |
| Management | 1987 – 1997 |
| Deputy | 2005 – 2009 |
| Deputy | 2016 – 2017 |
| Deputy | 1987 – 2001 |
| Deputy | 2020 – 2021 |
| Chief Executive Officer | 2021 – 2026 |
| Management | 2011 – 2013 |
| Deputy | 2005 – 2009 |
| Management | 2007 – 2011 |
| Deputy | 2020 – 2021 |
| Management | 2013 – 2013 |