21.   The prizes are awarded every year to students who have shown original thinking in their work.

22.   The resulting shallow pits and pools, often extending over many hectares, accumulate salts and nutrients from year to year.

23.   The September-October northern limit of pack ice varies considerably from year to year.

24.   The total expenditure varied very much from shire to shire and from year to year.

25.   This can be used to highlight changes from year to year or compare actual and required staffing levels.

26.   Those same cooks forget from year to year the most basic techniques of getting the bird to the table.

27.   Will we see a substantial increase in prices from year to year?

28.   Insect populations fluctuate wildly from year to year.

29.   I hope in years to come he will reflect on his decision.

30.   The beginning of the harvest varies from year to year.