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2025
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2024
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2023
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2022
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2021
- 31 teams
- 1 brand
2020
- 30 teams
- 1 brand
2019
- 31 teams
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2018
- 31 teams
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2017
- 31 teams
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2016
- 31 teams
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2015
- 31 teams
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2014
- 31 teams
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2013
- 31 teams
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2012
- 31 teams
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2011
- 31 teams
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2010
- 31 teams
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2009
- 31 teams
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2008
- 31 teams
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2007
- 31 teams
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2006
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2005
- 31 teams
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2004
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2003
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2002
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2001
- 31 teams
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2000
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1999
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- 7 brands
1998
- 31 teams
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1997
- 28 teams
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1996
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1995
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- 4 brands
1994
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1993
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1992
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1991
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1990
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1989
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- 2 brands
1988
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1987
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1986
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1985
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1984
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- 5 brands
1983
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1982
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1981
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1980
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- 7 brands
1979
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1978
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- 6 brands
1977
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1976
- 24 teams
- 5 brands
1975
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- 5 brands
1974
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- 5 brands
1973
- 24 teams
- 5 brands
1972
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1971
- 24 teams
- 6 brands
1970
- 24 teams
- 4 brands
1969
- 24 teams
- 5 brands
1968
- 20 teams
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1967
- 20 teams
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1966
- 20 teams
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1965
- 20 teams
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1964
- 20 teams
- 6 brands
1963
- 20 teams
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1962
- 20 teams
- 5 brands
1961
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1960
- 16 teams
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1959
- 16 teams
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1958
- 16 teams
- 5 brands
1957
- 16 teams
- 5 brands
1956
- 16 teams
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1955
- 16 teams
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1954
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1953
- 15 teams
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1952
- 16 teams
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1951
- 16 teams
- 5 brands
1950
- 16 teams
- 5 brands
1949
- 16 teams
- 5 brands
1948
- 15 teams
- 5 brands
1947
- 16 teams
- 5 brands
1946
- 15 teams
- 6 brands
1945
- 16 teams
- 6 brands
1944
- 14 teams
- 5 brands
1943
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- 6 brands
1942
- 13 teams
- 5 brands
1941
- 14 teams
- 5 brands
1940
- 14 teams
- 5 brands
1939
- 16 teams
- 4 brands
1938
- 15 teams
- 4 brands
1937
- 15 teams
- 4 brands
1936
- 16 teams
- 4 brands
1935
- 16 teams
- 6 brands
1934
- 15 teams
- 5 brands
1933
- 16 teams
- 4 brands
1932
- 15 teams
- 4 brands
1931
- 15 teams
- 4 brands
1930
- 14 teams
- 6 brands
1929
- 15 teams
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1928
- 15 teams
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1927
- 15 teams
- 5 brands
1926
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- 4 brands
1925
- 15 teams
- 6 brands
1924
- 14 teams
- 6 brands
1923
- 15 teams
- 6 brands
1922
- 15 teams
- 7 brands
1921
- 14 teams
- 5 brands
1920
- 13 teams
- 3 brands
1919
- 13 teams
- 3 brands
1918
- 12 teams
- 4 brands
1917
- 14 teams
- 4 brands
1916
- 13 teams
- 3 brands
1915
- 14 teams
- 3 brands
1914
- 15 teams
- 3 brands
1913
- 13 teams
- 3 brands
1912
- 12 teams
- 3 brands
1911
- 11 teams
- 3 brands
1910
- 15 teams
- 3 brands
1909
- 13 teams
- 3 brands
1908
- 10 teams
- 3 brands
1907
- 10 teams
- 2 brands
1906
- 12 teams
- 2 brands
1905
- 12 teams
- 3 brands
1904
- 12 teams
- 2 brands
1903
- 13 teams
- 2 brands
1902
- 11 teams
- 2 brands
1901
- 10 teams
- 1 brand
