(1909–1972)
27 April 1972
(died in office)
(1922–1984)
26 March 1984
(1916–2001)
1 July 1986
(1938–1998)
1 July 1989
(b. 1924)
1 July 1996
(b. 1947)
1 July 2003
(b. 1938)
1 July 2010
(b. 1941)
1 July 2017
(b. 1960)
present