2022
- 1 team
2021-22
- 1 team
2020-21
- 2 teams
2019-20
- 3 teams
2018
- 3 teams
2016
- 7 teams
2014
- 3 teams
2011
- 1 team
2006-07
- 2 teams
2005-06
- 4 teams
2004-05
- 2 teams
2003-04
- 5 teams
1999-00
- 2 teams
1998-99
- 3 teams
1997-98
- 3 teams
1996-97
- 3 teams
1995-96
- 3 teams
1994-95
- 2 teams
1993-94
- 4 teams
1992-93
- 4 teams
1991-92
- 6 teams
1990-91
- 4 teams
1989-90
- 2 teams
1988-89
- 5 teams
1987-88
- 7 teams
1986-87
- 6 teams
1985-86
- 4 teams
1984-85
- 4 teams
1982
- 2 teams
1980-81
- 2 teams
1979-80
- 5 teams
1979
- 1 team
1978-79
- 6 teams
1977-78
- 5 teams
1977
- 1 team
1976-77
- 2 teams
1976
- 1 team
1975-76
- 3 teams
1974
- 1 team
1973-74
- 1 team
