2023-24
- 11 teams
2022-23
- 3 teams
2021-22
- 6 teams
2020-21
- 5 teams
2019-20
- 6 teams
2018-19
- 4 teams
2017-18
- 4 teams
2016-17
- 3 teams
2015-16
- 5 teams
2014-15
- 7 teams
2013-14
- 9 teams
2012-13
- 5 teams
2011-12
- 9 teams
2010-11
- 7 teams
2009-10
- 9 teams
2008-09
- 8 teams
2007-08
- 6 teams
2006-07
- 4 teams
2005-06
- 1 team
