The population of the town was reduced from 150 to 25.

The population has been reduced by more than 60% since 1990.

By 1659, their population was reduced to less than 500.

By 1981 the population was reduced to less than 200.

Its population has been reduced by 55% within 10 years.

By then, the population had been reduced to around 5,000.

Human population will be reduced by some 90% over the course of this century, one way or another.

Disease like the present may have happened before, and reduced the population to a small number.

At the end of the war, in 1660, the island's population was reduced to 670.

Three days later comes the news, "The population is reduced by half."