2024-25
- 2 teams
2024
- 14 teams
2023-24
- 1 team
2023
- 13 teams
2022-23
- 1 team
2022
- 11 teams
2021-22
- 1 team
2021
- 9 teams
2020
- 10 teams
2019
- 9 teams
2018
- 7 teams
2017
- 8 teams
2016
- 7 teams
2015
- 7 teams
2014
- 3 teams
2013
- 3 teams
2012
- 2 teams
1979
- 1 team
1978-79
- 1 team
1978
- 3 teams
1977
- 4 teams
1975
- 6 teams
1974
- 6 teams
1973
- 6 teams
1972
- 3 teams
1971
- 3 teams
1970
- 8 teams
1968
- 6 teams
1964
- 2 teams
1961
- 1 team
1958
- 1 team
1957
- 1 team
1954
- 1 team
1953
- 1 team
1951
- 1 team
