1900 - 1914
1914 - 1921
1921 - 1927
1927 - 1940
1940 - 1941
1941 - 1943
1943 - 1958
1958 - 1974
1974 - 1979
1979 - 1982
1982 - 1984
1982 - 1987
1984 - 1985
1987 - 1992
2000
since 1992
