2017-18
- 2 teams
2015-16
- 4 teams
2013-14
- 3 teams
2012-13
- 4 teams
2011-12
- 6 teams
2010-11
- 5 teams
2009-10
- 8 teams
2008-09
- 9 teams
2007-08
- 8 teams
2006-07
- 12 teams
2005-06
- 14 teams
2004-05
- 11 teams
2003-04
- 12 teams
2002-03
- 15 teams
2001-02
- 12 teams
2000-01
- 14 teams
1999-00
- 17 teams
1998-99
- 21 teams
1997-98
- 18 teams
1996-97
- 22 teams
1995-96
- 26 teams
1994-95
- 27 teams
1993-94
- 20 teams
1992-93
- 17 teams
1991-92
- 9 teams
1990-91
- 7 teams
1989-90
- 4 teams
1984-85
- 2 teams
1983-84
- 5 teams
1982-83
- 4 teams
