2023-24
- 18 teams
- 11 brands
2022-23
- 20 teams
- 10 brands
2021-22
- 20 teams
- 10 brands
2020-21
- 20 teams
- 9 brands
2019-20
- 20 teams
- 10 brands
2018-19
- 20 teams
- 12 brands
2017-18
- 20 teams
- 12 brands
2016-17
- 20 teams
- 11 brands
2015-16
- 20 teams
- 11 brands
2014-15
- 20 teams
- 8 brands
2013-14
- 20 teams
- 11 brands
2012-13
- 21 teams
- 11 brands
2011-12
- 20 teams
- 11 brands
2010-11
- 20 teams
- 10 brands
2009-10
- 20 teams
- 12 brands
2008-09
- 20 teams
- 11 brands
2007-08
- 20 teams
- 11 brands
2006-07
- 20 teams
- 11 brands
2005-06
- 20 teams
- 11 brands
2004-05
- 20 teams
- 12 brands
2003-04
- 20 teams
- 12 brands
2002-03
- 20 teams
- 12 brands
2001-02
- 18 teams
- 11 brands
2000-01
- 18 teams
- 9 brands
1999-00
- 19 teams
- 9 brands
1998-99
- 18 teams
- 11 brands
1997-98
- 18 teams
- 7 brands
1996-97
- 20 teams
- 7 brands
1995-96
- 20 teams
- 9 brands
1994-95
- 20 teams
- 10 brands
1993-94
- 20 teams
- 9 brands
1992-93
- 20 teams
- 10 brands
1991-92
- 20 teams
- 8 brands
1990-91
- 19 teams
- 7 brands
1989-90
- 18 teams
- 7 brands
1988-89
- 13 teams
- 7 brands
1987-88
- 16 teams
- 7 brands
1986-87
- 16 teams
- 5 brands
1985-86
- 13 teams
- 6 brands
1984-85
- 17 teams
- 8 brands
1983-84
- 15 teams
- 6 brands
1982-83
- 14 teams
- 4 brands
1981-82
- 17 teams
- 3 brands
1980-81
- 15 teams
- 3 brands
1979-80
- 15 teams
- 4 brands
1978-79
- 14 teams
- 3 brands
1977-78
- 11 teams
- 4 brands
1976-77
- 8 teams
- 4 brands
1975-76
- 8 teams
- 3 brands
1974-75
- 6 teams
- 3 brands
1973-74
- 8 teams
- 2 brands
1972-73
- 7 teams
- 3 brands
1971-72
- 4 teams
- 1 brand
1970-71
- 2 teams
- 1 brand
1969-70
- 4 teams
- 1 brand
1968-69
- 1 team
- 1 brand
1967-68
- 4 teams
- 2 brands
1966-67
- 6 teams
- 2 brands
1965-66
- 2 teams
- 2 brands
1964-65
- 2 teams
- 2 brands
1963-64
- 3 teams
- 2 brands
1962-63
- 2 teams
- 1 brand
1961-62
- 2 teams
- 1 brand
1960-61
- 1 team
- 1 brand
1959-60
- 1 team
- 1 brand
1958-59
- 2 teams
- 1 brand
1957-58
- 2 teams
- 1 brand
1956-57
- 1 team
- 1 brand
1955-56
- 2 teams
- 1 brand
1954-55
- 3 teams
- 1 brand
1953-54
- 2 teams
- 2 brands
1952-53
- 2 teams
- 2 brands
1951-52
- 1 team
- 1 brand
1950-51
- 1 team
- 1 brand
1949-50
- 1 team
- 1 brand
1948-49
- 1 team
- 1 brand
1947-48
- 1 team
- 1 brand
1946-47
- 1 team
- 1 brand
1945-46
- 1 team
- 1 brand
1944-45
- 1 team
- 1 brand
1942-43
- 1 team
- 1 brand
1941-42
- 1 team
- 1 brand
1940-41
- 1 team
- 1 brand
1938-39
- 1 team
- 1 brand
1937-38
- 1 team
- 1 brand
1936-37
- 1 team
- 1 brand
1935-36
- 1 team
- 1 brand
1934-35
- 1 team
- 1 brand
1933-34
- 2 teams
- 1 brand
1932-33
- 1 team
- 1 brand
