| Former (57) |
| Deputy | 2005 – 2006 |
| Deputy | 2004 – 2005 |
| Deputy | 2005 – 2006 |
| Deputy | 2003 – 2004 |
| Deputy | 1997 – 1998 |
| Deputy | 1980 – 1995 |
| Deputy | 1996 – 1998 |
| Deputy | 1980 – 1991 |
| Deputy | 1980 – 1988 |
| Deputy | 1980 – 1987 |
| Deputy | 1980 – 1992 |
| Deputy | 1996 – 1997 |
| Deputy | 2005 – 2006 |
| Deputy | 1980 – 1987 |
| Management | 1980 – 1995 |
| Deputy | 1980 – 1988 |
| Deputy | 1997 – 2000 |
| Deputy | 1980 – 1992 |
| Deputy | 2002 – 2004 |
| Deputy | 1980 – 1995 |
| Deputy | 2000 – 2002 |
| Deputy | 1998 – 1999 |
| Deputy | 1980 – 1996 |
| Deputy | 1980 – 1987 |
| Deputy | 1980 – 1988 |
| Deputy | 1980 – 1990 |
| Deputy | 1980 – 1992 |
| Deputy | 1980 – 1991 |
| Chief Executive Officer | 2008 – 2008 |
| Deputy | 1998 – 1999 |
| Deputy | 1980 – 1988 |
| Deputy | 1997 – 1998 |
| Deputy | 1999 – 2000 |
| Deputy | 2004 – 2005 |
| Deputy | 1998 – 2000 |
| Deputy | 1997 – 1999 |
| Deputy | 1980 – 1996 |
| Deputy | 1980 – 1990 |
| Deputy | 2002 – 2005 |
| Deputy | 1980 – 1988 |
| Deputy | 1980 – 1995 |
| Unofficial title | 1980 – 1993 |
| Deputy | 2002 – 2003 |
| Deputy | 1999 – 2000 |
| Deputy | 2000 – 2002 |
| Deputy | 2002 – 2004 |
| Deputy | 2000 – 2002 |
| Unofficial title | 2010 – 2010 |
| Deputy | 1980 – 1998 |
| Deputy | 1999 – 2000 |
| Deputy | 1996 – 1997 |
| Deputy | 1980 – 1988 |
| Management | 1980 – 1999 |
| Deputy | 2000 – 2002 |
| Chief Executive Officer | 2008 – 2010 |
| Deputy | 2004 – 2005 |
| Deputy | 1980 – 1991 |