| Dates in Office | Name | Country |
| 24 October 1945 – 1 February 1946 | |
| 1 February 1946 – 10 November 1952 | |
| 10 April 1953 – 18 September 1961 | |
| 30 November 1961 – 31 December 1971 | |
| 1 January 1972 – 31 December 1981 | |
| 1 January 1982 – 31 December 1991 | |
| 1 January 1992 – 31 December 1996 | |
| 1 January 1997 – 31 December 2006 | |
| 1 January 2007– present | |