2018-19
- 2 teams
2017-18
- 2 teams
2015-16
- 2 teams
2013-14
- 1 team
2011-12
- 2 teams
2009-10
- 3 teams
2008-09
- 2 teams
2007-08
- 4 teams
2006-07
- 2 teams
2005-06
- 3 teams
2004-05
- 3 teams
2003-04
- 4 teams
2002-03
- 2 teams
1999-00
- 5 teams
1998-99
- 8 teams
1997-98
- 10 teams
1996-97
- 13 teams
1995-96
- 16 teams
1994-95
- 11 teams
1993-94
- 5 teams
1992-93
- 5 teams
1988-89
- 1 team
1987-88
- 1 team
