Source: International Monetary Fund
Release: Primary Commodity Prices
Value represents the benchmark prices which are representative of the global market. They are determined by the largest exporter of a given commodity. Prices are period averages in nominal U.S. dollars.
International Monetary Fund, Global price of Barley [PBARLUSDM], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/PBARLUSDM, January 23, 2019.