He said the force's size would likely double in a year.

About half of all hospital days now go to people over 65, a group expected to double in 30 years.

The number of Americans 65 and older is expected to double in 30 years.

The number is expected to double in the next year.

The population of more than 60 million is expected to double in the next 25 years.

At the current rate, human numbers will double in about 40 years.

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

That number is expected to double in the next two years.

To do this is to double the potential for development in a society.

By 2050 this older population is expected to double in size.