2023-24
- 8 teams
2022-23
- 2 teams
2021-22
- 3 teams
2019-20
- 5 teams
2018-19
- 1 team
2017-18
- 4 teams
2015-16
- 2 teams
2014-15
- 3 teams
2013-14
- 2 teams
2011-12
- 4 teams
2010-11
- 10 teams
2009-10
- 3 teams
2008-09
- 7 teams
2006-07
- 2 teams
2005-06
- 4 teams
2004-05
- 3 teams
2001-02
- 4 teams
2000-01
- 3 teams
1999-00
- 3 teams
1998-99
- 5 teams
1997-98
- 6 teams
1996-97
- 9 teams
1995-96
- 9 teams
1994-95
- 8 teams
1993-94
- 9 teams
1992-93
- 7 teams
1991-92
- 10 teams
1990-91
- 10 teams
1989-90
- 12 teams
1988-89
- 6 teams
1987-88
- 4 teams
1982-83
- 1 team
