| Former (17) |
| Unofficial title | 1998 – 1999 |
| Management | 1988 – 1994 |
| Audit | 1988 – 1988 |
| Management | 1988 – 1994 |
| Unofficial title | 2001 – 2004 |
| Unofficial title | 2001 – 2004 |
| Management | 1988 – 1997 |
| Management | 1988 – 1991 |
| Unofficial title | 1988 – 1994 |
| Management | 1998 – 2004 |
| Management | 1988 – 1992 |
| Management | 1988 – 1994 |
| Management | 2004 – 2004 |
| Unofficial title | 1988 – 1998 |
| Management | 1988 – 2004 |
| Management | 1988 – 1998 |
| Management | 1988 – 1988 |