U.S. Current Account / Capital Account Figures, Latest
The Current Account is the international flow of goods and services,
that is exports of goods and services minus imports of goods and services.
The Capital Account is the international flow of assets (foreign direct investment, stocks, bonds, etc.).
Balance of Payments = Current Account + Capital Account.
http://www.bea.gov/bea/newsrel/transnewsrelease.htm

Trade Balance, Goods and Services, Time Series
Monthly, January 1992 to latest.
Trade Balance
Exports
Imports

Balance of Payments (BOP), Goods
Yearly, 1960 to latest.
www.census.gov/foreign-trade/statistics/historical/goods.txt

U.S. Imports of Crude Oil Petroleum
From 1973 to present
www.census.gov/foreign-trade/statistics/historical/goods.txt