| Former (16) |
| Unofficial title | 1986 – 1995 |
| Chief Executive Officer | 1996 – 1997 |
| Unofficial title | 1986 – 1989 |
| Management | 1996 – 1999 |
| Management | 1986 – 1996 |
| Unofficial title | 1986 – 1991 |
| Unofficial title | 1986 – 1999 |
| Unofficial title | 1986 – 1991 |
| Management | 1998 – 1999 |
| Unofficial title | 1986 – 1999 |
| Management | 1996 – 1996 |
| Management | 1986 – 1992 |
| Unofficial title | 1986 – 1995 |
| Founder | 1986 – 1999 |
| Unofficial title | 1986 – 1991 |
| Unofficial title | 1995 – 1998 |