Saudi Arabia has been recording trade surpluses since 1968 due to shipments of oil (87 percent of total exports). Main imports are: machinery, mechanical appliances and electrical equipment; transport equipment and parts thereof and base metals. Main trading partners are: United States (14 percent of total exports and 12.6 percent of imports), China (12 percent of exports and 13 percent of imports) and Japan (13 percent of exports and 6 percent of imports). Others include: South Korea, United Arab Emirates, India and Germany.