Source: U.S. Bureau of Labor Statistics
Release: Producer Price Index
U.S. Bureau of Labor Statistics, Producer Price Index by Industry: Petroleum Refineries: Heavy Fuel Oils, Including No. 5, No. 6, Heavy Diesel, Gas Enrichment Oils, Etc. (DISCONTINUED) [PCU324110324110DY], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/PCU324110324110DY, April 21, 2018.