2022
- 1 team
2021-22
- 21 teams
2021
- 2 teams
2020-21
- 21 teams
2020
- 5 teams
2019-20
- 13 teams
2019
- 2 teams
2018-19
- 9 teams
2018
- 5 teams
2017-18
- 7 teams
2016-17
- 4 teams
2015-16
- 4 teams
2014-15
- 6 teams
2013-14
- 5 teams
2012-13
- 5 teams
2012
- 1 team
2011-12
- 5 teams
2010-11
- 6 teams
2009-10
- 5 teams
2008-09
- 4 teams
2007-08
- 4 teams
2006-07
- 10 teams
2006
- 1 team
2005-06
- 9 teams
2004-05
- 11 teams
2004
- 4 teams
2003-04
- 10 teams
2003
- 1 team
2002-03
- 8 teams
2002
- 2 teams
2001-02
- 7 teams
2000-01
- 9 teams
1999-00
- 4 teams
1998-99
- 3 teams
1997-98
- 2 teams
1997
- 1 team
1996-97
- 3 teams
1995-96
- 4 teams
1994-95
- 7 teams
1994
- 1 team
1993-94
- 9 teams
1992-93
- 7 teams
1991-92
- 7 teams
1990-91
- 6 teams
1989-90
- 3 teams
1988-89
- 3 teams
1983-84
- 1 team
1982-83
- 1 team
