The United States spends more on health care than any other country in the world, at an estimated 17.7 percent of Gross Domestic Product (GDP) in 2013. U.S. health care spending is outperforming revenue as a percentage of GDP, and is projected to grow by an average of 4.9 percent a year in 2014-18, to 17.9 percent of GDP by 2018. (more…)