| Chief Executive Officer | 2000 – 2003 |
| Management | 1998 – 1999 |
| Audit | 1999 – 2002 |
| Audit | 1999 – 1999 |
| Chief Executive Officer | 2000 – 2003 |
| Chief Executive Officer | 2003 – 2008 |
| Chief Executive Officer | 2000 – 2003 |
| Management | 2003 – 2004 |
| Chief Executive Officer | 2000 – 2003 |
| Management | 1999 – 2000 |
| Chief Executive Officer | 2004 – 2007 |
| Chief Executive Officer | 2004 – 2005 |
| Unofficial title | 2008 – 2010 |
| Management | 2003 – 2004 |
| Management | 2005 – 2008 |
| Management | 2007 – 2008 |