Source: US. Bureau of Labor Statistics
Release: U.S. Import and Export Price Indexes
For more information, please see the Import/Export Price Indexes web site at http://www.bls.gov/mxp
US. Bureau of Labor Statistics, Import (Harmonized System): Petroleum oils (not crude), bituminous oils, and products thereof, not elsewhere specified or included [IP2710], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/IP2710, December 4, 2016.