Concording U.S. Harmonized System Categories Over Time

20 Pages Posted: 7 Apr 2009 Last revised: 18 Jul 2010

See all articles by Justin R. Pierce

Justin R. Pierce

Board of Governors of the Federal Reserve System

Peter K. Schott

Yale University - School of Management; National Bureau of Economic Research (NBER); Yale University - Cowles Foundation

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Date Written: April 2009

Abstract

This paper: outlines an algorithm for concording U.S. ten-digit Harmonized System export and import codes over time; describes the concordances we construct for 1989 to 2004; and provides Stata code that can be used to construct similar concordances for arbitrary beginning and ending years from 1989 to 2007.

Suggested Citation

Pierce, Justin R. and Schott, Peter K., Concording U.S. Harmonized System Categories Over Time (April 2009). NBER Working Paper No. w14837, Available at SSRN: https://ssrn.com/abstract=1373346

Justin R. Pierce

Board of Governors of the Federal Reserve System ( email )

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Yale University - School of Management ( email )

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