Imports by origin of all grades of crude oil, i.e., heavy sour, heavy sweet, light sour, light sweet, and medium crude oil. View data by country, by world region, or by OPEC and non-OPEC status. Data in monthly or annual time series. Users of the EIA API are required to obtain an API Key via this registration form: http://www.eia.gov/beta/api/register.cfm