| Former (26) |
| Unofficial title | 1989 – 1998 |
| Management | 1997 – 1998 |
| Unofficial title | 1989 – 1996 |
| Management | 1989 – 1993 |
| Audit | 1989 – 1990 |
| Unofficial title | 1997 – 1998 |
| Management | 1998 – 1998 |
| Management | 1997 – 1998 |
| Unofficial title | 1989 – 1993 |
| Unofficial title | 1997 – 1998 |
| Unofficial title | 1989 – 1993 |
| Unofficial title | 1989 – 1996 |
| Unofficial title | 1989 – 1993 |
| Unofficial title | 1989 – 1998 |
| Unofficial title | 1989 – 1998 |
| Unofficial title | 1989 – 1996 |
| Chief Executive Officer | 1989 – 1998 |
| Unofficial title | 1997 – 1998 |
| Unofficial title | 1989 – 1998 |
| Unofficial title | 1989 – 1998 |
| Unofficial title | 1997 – 1998 |
| Management | 1989 – 1997 |
| Unofficial title | 1997 – 1998 |
| Management | 1997 – 1998 |
| Management | 1989 – 1990 |
| Unofficial title | 1997 – 1998 |