This database reflects the price movements of the net output of producers organized by the North American Industry Classification System (NAICS). It includes all industries in the goods-producing sectors of the U.S. economy: mining, manufacturing, agriculture, fishing, and forestry, natural gas, electricity, and construction. Coverage includes roughly 500 mining and manufacturing industries and approximately 150 services industries. Because the PPI is meant to measure changes in pricesreceived by domestic producers, it excludes import products.  Percent changes reflect annual figures, i.e., the annual change in prices over the latest one-year period.