2023
- 2 teams
2021-22
- 1 team
2004
- 1 team
2003
- 1 team
2001
- 3 teams
2000
- 4 teams
1999
- 3 teams
1998
- 3 teams
1996
- 4 teams
1994-95
- 3 teams
1994
- 7 teams
1993-94
- 2 teams
1993
- 6 teams
1992
- 4 teams
1990-91
- 4 teams
1989-90
- 8 teams
1988-89
- 7 teams
1987-88
- 7 teams
1987
- 3 teams
1986-87
- 9 teams
1985-86
- 13 teams
1984-85
- 19 teams
1983-84
- 18 teams
1982-83
- 13 teams
1981-82
- 11 teams
1981
- 1 team
1980-81
- 8 teams
1979-80
- 4 teams
1978-79
- 6 teams
1977-78
- 1 team
