| Current (3) |
| Founder | 1991 |
| Chief Executive Officer | 2022 |
| Founder | 1991 |
| Former (17) |
| Management | 2009 – 2010 |
| Management | 1991 – 1997 |
| Deputy | 1998 – 2002 |
| Management | 2011 – 2021 |
| Chief Executive Officer | 2021 – 2022 |
| Deputy | 1991 – 1995 |
| Deputy | 1998 – 1998 |
| Management | 2005 – 2008 |
| Deputy | 1998 – 2002 |
| Management | 2003 – 2005 |
| Management | 2002 – 2003 |
| Deputy | 2002 – 2008 |
| Chief Executive Officer | 2010 – 2011 |
| Management | 2000 – 2003 |
| Deputy | 1991 – 1998 |
| Chief Executive Officer | 1991 – 2002 |
| Deputy | 1998 – 1998 |