The number of teams playing in the league varied from year to year.

The growth did however vary quite a bit from year to year.

The expected real interest rate can vary considerably from year to year.

The game and the rules vary from year to year.

The rules for the final have varied from year to year.

The rate of interest may, therefore, vary from year to year.

The rules and goals of the competition vary from year to year.

These may have varied from year to year and are not specific to any one era.

Their income varies from year to year; usually it is over $150,000 and under $200,000.

The location of the conference varies from year to year.