The resident population has quadrupled since the early 1960's, to about 14,000 people.

In the last 20 years the town's population has quadrupled to nearly 30,000, and people do things differently now.

By 1960, the population nearly quadrupled from the 1950 figure to about 38,500.

The population of the metropolitan area has more than quadrupled in only 30 years.

By 1871 the total population had nearly quadrupled from 430,000 to 1.7 million people.

That is to say, within 100 years the human population will have quadrupled.

Its population has quadrupled over the period 1800 to 1990 (average doubling time 95 years).

Between 1901 and 1921 the parish's population nearly quadrupled from 4,510 to 16,177.

His figures indicate that the population has more than quadrupled in the 17 lower states since 1948.

For instance, during the 20th century, Asia's population nearly quadrupled.