2015-16
- 4 teams
2014-15
- 5 teams
2013-14
- 8 teams
2011-12
- 21 teams
2010-11
- 20 teams
2009-10
- 9 teams
2008-09
- 9 teams
2007-08
- 7 teams
2006-07
- 9 teams
2005-06
- 15 teams
2004-05
- 12 teams
2003-04
- 14 teams
2002-03
- 11 teams
2001-02
- 7 teams
2000-01
- 6 teams
1999-00
- 4 teams
1998-99
- 4 teams
1997-98
- 3 teams
1996-97
- 1 team
1992-93
- 2 teams
1990-91
- 1 team
