2023
- 16 teams
2022-23
- 36 teams
2022
- 88 teams
2021-22
- 49 teams
2021
- 65 teams
2020-21
- 23 teams
2020
- 63 teams
2019-20
- 23 teams
2019
- 48 teams
2018-19
- 15 teams
2018
- 28 teams
2017-18
- 15 teams
2017
- 23 teams
2016-17
- 7 teams
2016
- 19 teams
2015-16
- 8 teams
2015
- 14 teams
2014-15
- 7 teams
2014
- 15 teams
2013-14
- 10 teams
2013
- 12 teams
2012-13
- 6 teams
2012
- 10 teams
2011-12
- 10 teams
2011
- 15 teams
2010-11
- 9 teams
2010
- 8 teams
2009-10
- 8 teams
2009
- 5 teams
2008-09
- 8 teams
2008
- 7 teams
2007-08
- 14 teams
2007
- 10 teams
2006-07
- 7 teams
2006
- 11 teams
2005-06
- 10 teams
2005
- 10 teams
2004-05
- 9 teams
2004
- 8 teams
2003-04
- 21 teams
2003
- 6 teams
2002-03
- 16 teams
2002
- 9 teams
2001-02
- 20 teams
2001
- 4 teams
2000-01
- 17 teams
2000
- 8 teams
1999-00
- 13 teams
1999
- 4 teams
1998-99
- 6 teams
1998
- 6 teams
1997-98
- 10 teams
1996-97
- 13 teams
1995-96
- 13 teams
1994-95
- 14 teams
1994
- 6 teams
1993-94
- 11 teams
1993
- 8 teams
1992-93
- 14 teams
1992
- 10 teams
1991-92
- 8 teams
1991
- 18 teams
1990-91
- 9 teams
1990
- 13 teams
1989-90
- 9 teams
1989
- 12 teams
1988-89
- 9 teams
1988
- 9 teams
1987-88
- 7 teams
1987
- 10 teams
1986-87
- 12 teams
1986
- 4 teams
1985-86
- 11 teams
1985
- 10 teams
1984-85
- 12 teams
1984
- 6 teams
1983-86
- 1 team
1983-84
- 9 teams
1983
- 9 teams
1982-83
- 19 teams
1982
- 11 teams
1981-82
- 21 teams
1981
- 7 teams
1980-81
- 12 teams
1980
- 6 teams
1979-80
- 20 teams
1979
- 8 teams
1978-79
- 21 teams
1978
- 18 teams
1977-78
- 34 teams
1977
- 20 teams
1976-77
- 31 teams
1976
- 13 teams
1975-76
- 35 teams
1975
- 16 teams
1974-77
- 1 team
