U.S. Trade by 1972-SIC category, 1958-1994

The files in this directory contain the U.S. import and export data according to the 4-digit Standard Industrial Classification (SIC) 1972-basis. Data for 1958-1994 on a multilateral basis are contained in the file SIC58_94.ASC, and data for 1972-1994 on a bilateral basis are contained in the files IMPSIC*.ASC and EXPSIC*.ASC. These data were computed as part of a larger NBER project with funding from the National Science Foundation.

The site is hosted by University of California, Davis : https://cid.econ.ucdavis.edu/usixd/usixd4sic.html