Benchmark Input-Output Data: Historical SIC Data
The 1947, 1958, and 1963 benchmark input-output (I-O) data files available on this page are based on the 1957 Standard Industry Classification (SIC) system; the 1967, 1972, and 1977 data files are based on the 1967, 1972 and, 1977 SIC, respectively. The data in the above-mentioned benchmark I-O tables are valued in current dollars and reflect the contemporaneous industry definitions of the SIC system for the indicated years; thus they should not be used as a time series. In addition, none of the tables reflect the successive comprehensive revisions of the national income and product accounts.
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