2022-23
- 18 teams
- 10 brands
2021-22
- 18 teams
- 8 brands
2020-21
- 18 teams
- 10 brands
2019-20
- 18 teams
- 11 brands
2018-19
- 18 teams
- 8 brands
2017-18
- 18 teams
- 9 brands
2016-17
- 18 teams
- 8 brands
2015-16
- 18 teams
- 7 brands
2014-15
- 18 teams
- 8 brands
2013-14
- 18 teams
- 6 brands
2012-13
- 18 teams
- 5 brands
2011-12
- 18 teams
- 8 brands
2010-11
- 18 teams
- 9 brands
2009-10
- 18 teams
- 9 brands
2008-09
- 18 teams
- 10 brands
2007-08
- 18 teams
- 10 brands
2006-07
- 18 teams
- 8 brands
2005-06
- 18 teams
- 9 brands
2004-05
- 18 teams
- 7 brands
2003-04
- 18 teams
- 9 brands
2002-03
- 18 teams
- 8 brands
2001-02
- 18 teams
- 7 brands
2000-01
- 18 teams
- 8 brands
1999-00
- 18 teams
- 9 brands
1998-99
- 18 teams
- 7 brands
1997-98
- 18 teams
- 9 brands
1996-97
- 18 teams
- 9 brands
1995-96
- 18 teams
- 8 brands
1994-95
- 18 teams
- 11 brands
1993-94
- 18 teams
- 9 brands
1992-93
- 17 teams
- 8 brands
1991-92
- 18 teams
- 5 brands
1990-91
- 17 teams
- 4 brands
1989-90
- 16 teams
- 3 brands
1988-89
- 13 teams
- 3 brands
1987-88
- 15 teams
- 3 brands
1986-87
- 15 teams
- 3 brands
1985-86
- 13 teams
- 3 brands
1984-85
- 15 teams
- 2 brands
1983-84
- 13 teams
- 3 brands
1982-83
- 16 teams
- 2 brands
1981-82
- 13 teams
- 3 brands
1980-81
- 12 teams
- 3 brands
1979-80
- 15 teams
- 3 brands
1978-79
- 12 teams
- 4 brands
1977-78
- 12 teams
- 5 brands
1976-77
- 8 teams
- 4 brands
1975-76
- 4 teams
- 3 brands
1974-75
- 8 teams
- 6 brands
1973-74
- 6 teams
- 5 brands
1972-73
- 9 teams
- 5 brands
1971-72
- 7 teams
- 2 brands
1970-71
- 6 teams
- 2 brands
1969-70
- 5 teams
- 3 brands
1968-69
- 2 teams
- 2 brands
1967-68
- 5 teams
- 3 brands
1966-67
- 4 teams
- 3 brands
1965-66
- 5 teams
- 3 brands
1964-65
- 1 team
- 1 brand
