2020-21
- 1 team
2019-20
- 1 team
2014-15
- 1 team
2002-03
- 1 team
2001-02
- 2 teams
2000-01
- 6 teams
1999-00
- 3 teams
1997-98
- 4 teams
1996-97
- 4 teams
1995-96
- 4 teams
1994-95
- 4 teams
1993-94
- 4 teams
1992-93
- 16 teams
1991-92
- 20 teams
1990-91
- 21 teams
1989-90
- 21 teams
1988-89
- 16 teams
1987-88
- 18 teams
1986-87
- 15 teams
1985-86
- 10 teams
1984-85
- 7 teams
1983-84
- 5 teams
1982-83
- 7 teams
