Oil is the backbone of the Qatar economy and accounts for more than 50% of GDP, roughly 85% of export earnings, and 70% of government revenues. Agriculture is limited to fruits, vegetables, and livestock, and there is some fishing. Qatar imports the majority of its food. Natural gas, crude oil, refined petroleum, and petrochemicals are produced, and ammonia, fertilizers, steel, and ship repairing are some of Qatar's developing diversified industries. Oil has given Qatar a per capita GDP comparable to the leading West European industrial countries. Oil and gas products, steel and fertilizer are Qatar major exports, while machinery, transportation equipment, food, and chemicals are imported. Japan, South Korea, France, and the United States are the major trading partners.