1.   A falling mortality rate led to a gradual increase in the proportion of the aged in the population.

2.   For women, a pattern of gradual increase was seen by birth cohort in all age groups.

3.   Her temperature chart showed a gradual increase over the preceding six hours.

4.   The problem was resolved by a gradual increase in the social division of labour.

5.   Mixing of solutions contributed very little to the overall concentration, but once the procedure started, there was a gradual increase in formaldehyde concentration.

6.   Because of hikes in enrollment, the ratio of students to counselors has remained roughly the same despite the gradual increase of new counselors, according to state figures.

7.   --A gradual increase in sales across the tech spectrum as customers upgrade hardware and software systems to accommodate the needs of a more hostile environment.

8.   Dole did not mention that the main elements of that plan were an increase in payroll taxes and a gradual increase in the retirement age.

9.   Each paid dues on the bench, getting rare duty as rookies and only gradual increases in the seasons since.

10.   Experts predict a gradual increase in such testing as the roster of variations is compiled and research accelerates.