(CNNMONEY.COM) A growing number of Americans are skipping needed medical care because they can’t afford it.

Some 80 million people, around 43% of America’s working-age adults, didn’t go to the doctor or access other medical services last year because of the cost, according to the Commonwealth Fund’s Biennial Health Insurance Survey, released Friday. That’s up from 75 million people two years ago and 63 million in 2003.

Not surprisingly, those who were uninsured or had inadequate health insurance were most likely to have trouble affording care. But 28% of working-age adults with good insurance also had to forgo treatment because of the price.

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