1.   Demographers project that its population will double in size within a generation.

2.   The smallest metropolitan county had, therefore, a population approximately double that of the largest unitary authority.

3.   Community leaders hope the population will double in five years.

4.   Every academic year, its population doubles with the influx of students from MIT, Harvard and many and other schools and research institutes.

5.   Given such growth rates, it would seem safe to predict that the population will double again in a matter of decades.

6.   In Georgia, the prison population has doubled in the past decade.

7.   Some cities showed that populations had doubled in three years, and in one region, municipal officials were accused of counting tombstones.

8.   Songbird populations doubled and tripled, bureau biologists said.

9.   The deer population doubled, then doubled again.

10.   The population doubled during the Cuomo administration, and Cuomo built dozens of new prisons to accommodate the flood of new inmates.