Iran raised gasoline prices by as much as 200% and imposed a rationing system, sparking anti-government protests around the country. The changes increased the price of gas to 15,000 rials per liter (approximately 13 cents) from 10,000 rials, while limiting private cars to 60 liters per month with a price of 30,000 rials per liter for additional purchases. Iranian state media claimed that the policy, which will generate an estimated $800 million in revenue per year, is intended to fund subsidies for 60 million Iranians. The surprise announcement prompted major protests in major Iranian cities and smaller towns, some of which have turned violent.