That industry has greatly decreased since the middle of the 20th century.

The population has decreased greatly since 1980, when it was 21,524.

Crime increased at this time, but has decreased greatly in recent years.

The flow of the spring has decreased greatly in modern times.

Or that would greatly decrease my ability to fight infection.

The unpleasant side effects also greatly decrease quality of life.

The rebels' numbers were said to have greatly decreased in that period.

But he said that further migration "is certain to decrease greatly."

Since 1974, government regulation of industry and banking has greatly decreased.

The population has decreased greatly since 1980-from 9,246 to 2,852-and the tendency is continuing.