In the time since the Affordable Care Act, otherwise known as Obamacare, went into effect, millions of Americans now have health insurance benefits, according to a federal government survey.

The survey, performed via the Centers for Disease Control and Prevention, revealed that 36 million people were uninsured on the day of the survey, marking a decline of 8.8 million people from the prior year.

The National Health Interview Survey highlighted that for adults aged 18-64, the numbers of uninsured decreased from 20.4 percent in 2013 to 16.3 percent in 2014. The numbers were especially favorable to young adults aged 19-25, with a decline of uninsured dropping from 26.5 percent in 2013 to 20 percent in 2014.

As noted by the Huffington Post, Obamacare has achieved marks in its short time despite heavy criticism from Republican-controlled Congress that has fought to upend the law. The battle for the law’s repeal has been intense, with the Supreme Court of the United States set to oversee a lawsuit brought by Republicans and Libertarians regarding health care expansion.