The minimum wage in the United States is set by a network of federal, state, and local statutes. Workers generally must be paid no less than the statutory minimum wage as specified by either the federal, state, or local government. As of July 2015, the federal government mandates a nationwide minimum wage level of $7.25 per hour. Effective January 1, 2015 there were 29 states with a minimum wage higher than the federal minimum. From 2014 to 2015, nine states increased their minimum wage levels through automatic adjustments, while increases in 11 other states occurred through legislative or ballot changes. The federal minimum wage peaked at about $10 in 1968, as measured in 2014 inflation-adjusted dollars.