1.   It seems that many buildings will soon become unsafe unless there is a big increase in funds available for much-needed work.

2.   Severe cold conditions could lead to a big increase in cod numbers.

3.   The company has announced a big increase in its profits for last year.

4.   There could soon be a big increase in unemployment.

5.   ...a big increase in U.S. aid to help developing countries conserve their forests.

6.   The big increase in cable rates prompted a flood of irate calls and letters.

7.   And on-line retailers are seeing big increases in sales -- though not, as yet, profits.