Swiss voters resoundingly rejected a proposal to move the country to a single-payer system on Sunday. Instead, the country will keep its private health insurance system, which looks a whole lot like Obamacare.

Two-thirds of Swiss voters opposed creating a state-run health plan in the national referendum. The issue was put to a vote after Swiss campaigners gathered more than 100,000 signatures, the threshold for getting a national vote; some initial polls in 2013 had shown strong support for a state-run system.

For a country with a relatively small population (8 million), Switzerland comes up a shocking amount in debates over American health care. That's probably because the Swiss health care system looks pretty similar to the one Obamacare sets up.

Since 1996, Switzerland has required all residents purchase coverage through an individual mandate. "If you move to Switzerland, you have three months to buy coverage and it's retroactive to your arrival," Aaron Carroll explains in his excellent video primer on the Swiss health care system.

Swiss residents buy coverage from private health insurance plans, who compete for their business. The average monthly premium for adults, in American dollars, was $329 in 2013. There are no pre-existing conditions in Switzerland; insurers are only allowed to vary premiums based on age, charging different rates for children under 18, young adults between 19 and 25, and adults over 25.