| Term of Office | Name |
|---|
| 14 November 1918 - 8 July 1919 | |
| 8 July 1919 - 15 September 1920 | |
| 15 September 1920 - 26 September 1921 | |
| 26 September 1921 - 7 October 1922 | |
| 7 October 1922 - 18 March 1926 | |
| 18 March 1926 - 12 October 1926 | |
| 12 October 1926 - 1 February 1929 | |
| 1 February 1929 - 24 October 1932 | |
| 24 October 1932 - 5 November 1935 | |
| 5 November 1935 - 22 September 1938 | |
| 22 September 1938 - 1 December 1938 | |
| 1 December 1938 - 15 March 1939 | |
| 5 April 1945 - 2 July 1946 | |
| 2 July 1946 - 15 June 1948 | |
| 15 June 1948 - 14 March 1953 | |
| 14 March 1953 - 20 September 1963 | |
| 20 September 1963 - 8 April 1968 | |
| 8 April 1968 - 28 January 1970 | |
| 28 January 1970 - 12 October 1988 | |
| 12 October 1988 - 7 December 1989 | |
| 7 December 1989 - 2 July 1992 | |
| 2 July 1992 - 31 December 1992 | |
| 1 January 1993 - 2 January 1998 | |
| 2 January 1998 - 22 July 1998 | |
| 22 July 1998 - 15 July 2002 | |
| 15 July 2002 - 4 August 2004 | |
| 4 August 2004 - 25 April 2005 | |
| 25 April 2005 - 4 September 2006 | |
| 4 September 2006 - 8 May 2009 | |
| 8 May 2009 - 13 July 2010 | |
| 13 July 2010 - 10 July 2013 | |
| 10 July 2013 - 29 January 2014 | |
| 29 January 2014 - 13 December 2017 | |
| 13 December 2017 - | |
