That is well above the national rate of 17 percent.

The national rate was 6.9 per 1,000 in 2000, the most recent figure available.

That is slightly below the national rate of 55 percent.

The national rate is from 10 to 13 cases per 100,000.

The national rate among pregnant women in 2003 was 27.9 percent.

That is significantly higher than the 10.3 percent national rate.

Calls to 03 numbers cost no more than a national rate call to an 01 or 02 number.

That is far higher than the national rate for learning problems.

That gives a national rate of 48 per 100,000 people.

But that was still far more than double the national rate.