The competition was revised into a league format from 2006.

Instead the 12 teams will play each other three times in a conventional league format.

The event is played in the league format and features the top 14 teams around the world.

The tournament took a league format with each team playing the others once.

The four groups are again played in a league format, where a team plays its opponents once each.

From the 1993-94 season, the competition has been converted to a league format.

The championships were replaced by the league format in 1996-97.

Instead, the 12 teams began playing each other three times in a more conventional league format.

From 1993-94 teams played each other home and away (10 matches) in the league format.

It was the first season using the new two league format since the split the previous year.