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