Some experts predict the amount could double every year for the next 10 years.

The amount will then double if the child is a boy.

But some estimates expect that amount to double by 1995.

Americans spend more than $660 billion a year on health care, and the amount has doubled in the last eight years.

And the amount borrowed has nearly doubled, to $23.1 billion.

By the time some reach college age, the amount can double.

The amount for each doubles event is shown as a team.

That amount would double the company's current average daily output.

Since 1985, the amount of free space going to public service ads has nearly doubled, to $667 million last year.

Night flying was added to the school program and the amount of training time doubled.