The population of the city would double over the next 15 years as a result.

Based on this growth rate, the population would double in 53.8 years.

Its population of eight to nine million probably won't double before 20 years.

The population doubled over the last 60 years of the 19th century.

Since the 1960s, the population has doubled to almost 4900 today.

The population of the town had doubled in 80 years.

However between 1990 and 2000 the population nearly doubled from 580 to 1,010.

The city's population had doubled in the last ten years.

By 2000, the population had more than doubled to 405.

By 1851 the population of the town had more than doubled to 5112.