2020-21
- 4 teams
2019
- 2 teams
2018-19
- 1 team
2017-18
- 1 team
2016-17
- 3 teams
2015-16
- 2 teams
2014-15
- 3 teams
2013-14
- 5 teams
2012-13
- 4 teams
2011-12
- 2 teams
2009-10
- 2 teams
2008-09
- 3 teams
2007-08
- 5 teams
2006-07
- 4 teams
2005-06
- 4 teams
2004-05
- 4 teams
2003-04
- 6 teams
2002-03
- 5 teams
2001-02
- 5 teams
2000-01
- 2 teams
1999-00
- 2 teams
1998-99
- 2 teams
1996-97
- 1 team
1995-96
- 1 team
