Source: U.S. Bureau of Economic Analysis
Real Manufacturing and Trade Industries Sales is used in the calculation of CMRMTSPL (https://fred.stlouisfed.org/series/CMRMTSPL). This series is based on the North American Industry Classification System (NAICS), which replaced the Standard Industrial Classification (SIC) system. The SIC is no longer published with this release, and the SIC series is HMRMT (https://fred.stlouisfed.org/series/HMRMT).
U.S. Bureau of Economic Analysis, Real Manufacturing and Trade Industries Sales [CMRMT], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/CMRMT, August 19, 2017.