(1909–1972)
27 April 1972
(died in office)
(1922–1984)
26 March 1984
(1916–2001)
1 July 1984
(1938–1998)
1 July 1988
(1938–1997)
1 July 1992
(in exile from Nigeria)
(b. 1924)
1 July 1996
(1941 – 1998)
4 September 1996
(resigned following cancer diagnosis)
(originally from America)
(b. 1947)
1 July 2000
(b. 1938)
1 July 2004
1 July 2008
(b. 1941)
1 July 2012
(b. 1952)
1 July 2016
(b. 1960)
present