U.S. net petroleum trade, including crude oil, petroleum products, and natural gas plant liquids, has fallen in recent years, reaching 3.7 million barrels per day (b/d) in 2017. This is the lowest level of net petroleum trade (imports minus exports) since 1971. At the same time, total U.S. gross petroleum trade (imports and exports) has reached an all-time high of 16.3 million b/d in 2017.