What types of indexes are published?
PPIs are available for two different product classification systems. Both sets of PPIs draw from the same pool of price information provided to BLS by cooperating reporters. Both sets of PPIs feature both individual product and product line indexes and comprehensive “stage-of-processing” indexes for aggregations of products. The latter indexes are useful for studying the transmission of price change across successive stages of economic activity in the U.S. economy. Commodity classification. The commodity classification structure organizes products by similarity of end use or material composition. Products are classified in this structure without regard to their industry of origin. The commodity classification system used is unique to the PPI and does not match any other widely used coding structure such as the North American Industry Classification System (NAICS). The commodity stage-of-processing indexes group commodities by class of buyer and amount of physical processing or assembli
There are three main PPI classification structures which draw from the same pool of price information provided to the BLS by cooperating company reporters: • Industry classification. A Producer Price Index for an industry is a measure of changes in prices received for the industrys output sold outside the industry (that is, its net output). The PPI publishes over 600 industry price indexes in combination with over 5,000 specific product line and product category sub-indexes. Standardized North American Industry Classification System (NAICS) industry index codes provide comparability with a wide assortment of industry-based data for other economic programs, including productivity, production, employment, wages, and earnings. • Commodity classification. The commodity classification structure of the PPI organizes products and services by similarity or material composition, regardless of the industry classification of the producing establishment. This system is unique to the PPI and does n
