Effective with the release of August 2009 data on September 15, 2009, the Producer Price Index (PPI) program has updated the net output ratios used to calculate industry indexes based on the North American Industry Classification System (NAICS). With this update, net output ratios are now based on 2002 Input-Output Account data from the Bureau of Economic Analysis (BEA) of the U.S. Department of Commerce. Net output ratios represent the proportion of an industry's or industry groupings output consumed outside its respective area. Prior to this update, net output ratios for calculating NAICS-based PPIs reflected values from BEA 1997 Input-Output Accounts. This update does not affect commodity-grouping indexes from the PPI.
Further information is available from the PPI Section of Index Analysis and Public Information, at firstname.lastname@example.org or (202) 691-7705.
Last Modified Date: September 15, 2009