1972
- 5 teams
1971
- 6 teams
1970
- 8 teams
1969
- 7 teams
1968
- 6 teams
1967
- 5 teams
1966
- 6 teams
1965
- 6 teams
1964
- 7 teams
1963
- 6 teams
1962
- 6 teams
1961
- 4 teams
1960
- 4 teams
1959
- 4 teams
1958
- 3 teams
1957
- 4 teams
1956
- 4 teams
1955
- 3 teams
1953
- 1 team
1950
- 3 teams
1949
- 3 teams
1947
- 1 team
1942
- 7 teams
1941
- 8 teams
1940
- 9 teams
1939
- 12 teams
1938
- 11 teams
1937
- 10 teams
1936
- 12 teams
1935
- 12 teams
1934
- 10 teams
1933
- 13 teams
1932
- 12 teams
1931
- 11 teams
1930
- 9 teams
1929
- 10 teams
1928
- 11 teams
1927
- 11 teams
1926
- 10 teams
1925
- 7 teams
1924
- 5 teams
1923
- 6 teams
1922
- 5 teams
1921
- 4 teams
1920
- 5 teams
1919
- 5 teams
1918
- 3 teams
1917
- 4 teams
1916
- 4 teams
1915
- 5 teams
1914
- 4 teams
1913
- 4 teams
1911
- 2 teams
1910
- 3 teams
1909
- 2 teams
1908
- 1 team
1906
- 2 teams
1905
- 1 team
1903
- 1 team
1902
- 1 team
