2021-22
- 3 teams
2020-21
- 4 teams
2019-20
- 1 team
2018-19
- 2 teams
2017-18
- 2 teams
2016-17
- 3 teams
2015-16
- 2 teams
2014-15
- 4 teams
2013-14
- 3 teams
2012-13
- 2 teams
2010-11
- 2 teams
2003-04
- 3 teams
2002-03
- 4 teams
2002
- 2 teams
2001-02
- 4 teams
2000-01
- 4 teams
1999-00
- 3 teams
1998-99
- 2 teams
1997-98
- 3 teams
1996-97
- 3 teams
1995-96
- 1 team
1993
- 1 team
1992-93
- 6 teams
1992
- 1 team
1989-90
- 1 team
1987-88
- 2 teams
1985-87
- 1 team
1985-86
- 1 team
1984-85
- 3 teams
1983-84
- 4 teams
1982-83
- 4 teams
1981-82
- 3 teams
