WASHINGTON — Americans kept up their health insurance last year despite President Trump’s all-out push to dismantle the Obama-era coverage expansion. That’s the counterintuitive conclusion from a government survey.

After nearly a full year of Trump, the uninsured rate was 9.1 percent for 2017, almost the same as near the end of the Obama administration, the Centers for Disease Control and Prevention said. That works out to a little more than 29 million people uninsured.

Overall, the uninsured rate has dropped from 16 percent when the Affordable Care Act was signed in 2010, which translates roughly to 19 million people gaining coverage.

‘‘Despite all the noise and despite the chain-rattling Republicans have done with their failed attempts at repeal, at the end of the day the number of uninsured has stayed flat,’’ said health economist Gail Wilensky, a longtime GOP adviser.

But the CDC survey also showed uninsured numbers edged up for some groups, raising questions about potential problems this year and beyond. It doesn’t reflect repeal of the health law’s requirement that individuals carry health insurance; that doesn’t take effect until next year.

Associated Press