Concording U.S. Harmonized System Categories Over Time
20 Pages Posted: 5 Aug 2009
Date Written: May 1, 2009
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.
JEL Classification: F1
Suggested Citation: Suggested Citation