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