2020
- 2 Teams
2019
- 6 Teams
2018
- 12 Teams
2017
- 11 Teams
2016-17
- 1 Team
2016
- 6 Teams
2015-16
- 1 Team
2014-15
- 3 Teams
2014
- 2 Teams
2013-14
- 3 Teams
2013
- 1 Team
2012-13
- 2 Teams
2012
- 3 Teams
2011-12
- 4 Teams
2011
- 4 Teams
2010-11
- 3 Teams
2010
- 3 Teams
2009-10
- 4 Teams
2009
- 2 Teams
2008-09
- 5 Teams
2008
- 2 Teams
2007-08
- 6 Teams
2007
- 2 Teams
2006-07
- 5 Teams
2006
- 2 Teams
2005-06
- 6 Teams
2005
- 8 Teams
2004-05
- 5 Teams
2004
- 7 Teams
2003-05
- 1 Team
2003-04
- 3 Teams
2003
- 9 Teams
2002-03
- 3 Teams
2002
- 10 Teams
2001-02
- 2 Teams
2001
- 13 Teams
2000
- 12 Teams
1999-00
- 1 Team
1999
- 13 Teams
1998-99
- 3 Teams
1998
- 15 Teams
1997-98
- 3 Teams
1997
- 15 Teams
1996-97
- 4 Teams
1996
- 9 Teams
1995-96
- 4 Teams
1995
- 6 Teams
1994-95
- 2 Teams
1994
- 3 Teams
1993-94
- 5 Teams
1992-93
- 4 Teams
1992
- 3 Teams
1991-92
- 3 Teams
1991
- 3 Teams
1990-91
- 3 Teams
1990
- 6 Teams
1989-90
- 4 Teams
1989
- 7 Teams
1988-89
- 4 Teams
1988
- 4 Teams
1987-88
- 6 Teams
1987
- 7 Teams
1986-87
- 5 Teams
1986
- 6 Teams
1985-86
- 5 Teams
1985
- 5 Teams
1984-85
- 7 Teams
1984
- 8 Teams
1983-84
- 5 Teams
1983
- 8 Teams
1982-83
- 4 Teams
1982
- 6 Teams
1981-82
- 3 Teams
1981
- 2 Teams
1980
- 6 Teams
