The arable land figure has shown a gradual increase since 1961.

The result is a gradual increase in the temperature inside your car.

A gradual increase led to a total of 136 mills being set up by 1900.

Make sure you will be able to pay if it does go up; experts predict a gradual increase over the next few years.

It has continued to see a gradual increase in circulation over the years.

The 1961 census saw another gradual increase in population to 112.

"We expect a gradual increase in home sales activity as a result."

Despite the gradual increase in economic growth within the Union over the years, there are still millions of people who have not benefited.

Nevertheless, from about 1949 to the present, there has been a gradual increase in attention to, and promotion of, the language.

He had the engines increased so the velocity was on a gradual increase.