2018
- 32 teams
- 8 brands
2014
- 32 teams
- 8 brands
2010
- 32 teams
- 7 brands
2006
- 32 teams
- 7 brands
2002
- 32 teams
- 12 brands
1998
- 32 teams
- 12 brands
1994
- 24 teams
- 8 brands
1990
- 24 teams
- 8 brands
1986
- 24 teams
- 9 brands
1982
- 18 teams
- 5 brands
1978
- 13 teams
- 5 brands
1974
- 8 teams
- 3 brands
1970
- 6 teams
- 3 brands
1966
- 6 teams
- 5 brands
1962
- 5 teams
- 4 brands
1958
- 4 teams
- 4 brands
1954
- 4 teams
- 3 brands
1950
- 3 teams
- 1 brand
1938
- 3 teams
- 1 brand
1934
- 4 teams
- 2 brands
1930
- 4 teams
- 3 brands
