2023-24
- 12 teams
2023
- 2 teams
2022-23
- 10 teams
2022
- 5 teams
2021-22
- 11 teams
2021
- 2 teams
2020-21
- 11 teams
2019-20
- 7 teams
2018-19
- 9 teams
2017-18
- 12 teams
2016-17
- 10 teams
2015-16
- 6 teams
2014-15
- 14 teams
2014
- 1 team
2013-14
- 14 teams
2013
- 1 team
2012-13
- 9 teams
2012
- 1 team
2011-12
- 7 teams
2011
- 1 team
2010-11
- 10 teams
2009-10
- 11 teams
2009
- 3 teams
2008-09
- 10 teams
2007-08
- 6 teams
2007
- 1 team
2006-07
- 6 teams
2004-05
- 1 team
1996-97
- 2 teams
1995-96
- 3 teams
1993-94
- 5 teams
1992-93
- 8 teams
1991-92
- 4 teams
1990-91
- 3 teams
1989-90
- 3 teams
1970-71
- 1 team
