With the expansion to 15 teams, the competition format was dramatically changed.

The competition format was the same as the previous season.

The competition format remained much the same through 1997.

The competition format was the same as the previous year and once again featured eighteen teams.

However, the competition format has changed almost every year since it first occurred, in 1971.

This was the first time since 2003 that the competition format had changed.

After the prize structure has been established the next most important decisions will concern the competition format.

The expansion to 15 teams led to major changes in the competition format.

The same numbers of teams participated, and the competition format was not changed.

There have also been a number of changes in the competition format: