2013-14
- 8 teams
2012-13
- 12 teams
2011-12
- 6 teams
2010-11
- 10 teams
2009-10
- 13 teams
2008-09
- 5 teams
2007-08
- 6 teams
2005-06
- 2 teams
2004-05
- 2 teams
2003-04
- 2 teams
2002-03
- 1 team
1999-00
- 1 team
1997-98
- 1 team
1996-97
- 1 team
1995-96
- 1 team
1994-95
- 5 teams
1993-94
- 5 teams
1992-93
- 5 teams
1991-92
- 4 teams
1990-91
- 6 teams
1989-90
- 5 teams
1989
- 1 team
1988-89
- 5 teams
1987-88
- 4 teams
1985-86
- 2 teams
1982-83
- 1 team
1981-82
- 1 team
