| Former (20) |
| Unofficial title | 1990 – 1996 |
| Management | 1997 – 1998 |
| Unofficial title | 1990 – 1996 |
| Audit | 1990 – 1990 |
| Audit | 2000 – 2002 |
| Management | 1990 – 1991 |
| Management | 1998 – 2003 |
| Management | 2000 – 2003 |
| Management | 1990 – 1996 |
| Management | 2000 – 2002 |
| Management | 1997 – 1998 |
| Unofficial title | 1990 – 1996 |
| Management | 2003 – 2003 |
| Management | 1996 – 1997 |
| Management | 2000 – 2003 |
| Management | 2000 – 2003 |
| Management | 1998 – 2000 |
| Unofficial title | 1990 – 1996 |
| Management | 1990 – 1990 |
| Chief Executive Officer | 1996 – 1996 |