Just 8.8% of Americans lacked health insurance as of this past September, according to the latest numbers from the National Health Interview Survey conducted by the Centers for Disease Control and Prevention.

But more insured people are on the hook for sizable portions of their health care costs. More than 39% of Americans younger than 65 are enrolled in a plan with a high deductible — a big increase from 2010, when 25% of people were in a high-deductible policy. Popular Republican plans to replace Obamacare rely heavily on high deductibles and health savings accounts.

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