| | | | | |
| 1889-1896 (7 years) | 1896-1903 (7 years) | 1903-1911 (8 years) | 1911-1916 (5 years) | 1916-1922 (6 years) | 1922-1933 (11 years) |
| | | | | |
| 1933-1941 (8 years) | 1941-1948 (7 years) | 1948-1957 (9 years) | 1957-1970 (13 years) | 1970-1977 (7 years) | 1977-1983 (6 years) |
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| 1983-1991 (8 years) | 1991-1996 (5 years) | 1996-2001 (5 years) | 2001-2007 (6 years) | 2007-2012 (5 years) | 2012-2017 (5 years) |