Concording U.S. Harmonized System Categories Over Time

20 Pages Posted: 7 Apr 2009 Last revised: 16 Jan 2022

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

Multiple version iconThere are 3 versions of this paper

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 )

20th Street and Constitution Avenue NW
Washington, DC 20551
United States

HOME PAGE: http://www.justinrpierce.com/

Peter K. Schott (Contact Author)

Yale University - School of Management ( email )

135 Prospect Street
P.O. Box 208200
New Haven, CT 06520-8200
United States
203-436-4260 (Phone)
203-436-6974 (Fax)

HOME PAGE: http://www.som.yale.edu/faculty/pks4

National Bureau of Economic Research (NBER)

1050 Massachusetts Avenue
Cambridge, MA 02138
United States

Yale University - Cowles Foundation

Box 208281
New Haven, CT 06520-8281
United States