2020
- 24 teams
- 6 brands
2016
- 24 teams
- 8 brands
2012
- 16 teams
- 4 brands
2008
- 16 teams
- 4 brands
2004
- 16 teams
- 4 brands
2000
- 16 teams
- 6 brands
1996
- 16 teams
- 9 brands
1992
- 8 teams
- 4 brands
1988
- 8 teams
- 5 brands
1984
- 8 teams
- 3 brands
1980
- 8 teams
- 5 brands
1976
- 4 teams
- 2 brands
1972
- 4 teams
- 3 brands
1968
- 4 teams
- 2 brands
1964
- 4 teams
- 2 brands
1960
- 4 teams
- 2 brands
