The league was reduced back to twelve teams for the 2013 season.

The season after, the league was reduced to ten teams.

The league was reduced to 18 teams and had two phases.

Financial problems reduced the league to five teams in September 1947.

By the 1942-43 season, the league was reduced to six teams.

A third round reduced it to 8 teams with players.

Thus, the league was reduced to 15 teams for this season.

Starting with the 1971/72 season the size of each division was reduced to 8 teams.

The league was reduced to 17 teams and eliminated the groups.

For the 1912-13 season, the league was reduced to eight teams.