Data Website

for Hummels, David, "Transportation Costs and International Trade in the Second Era of Globalization", Journal of Economic Perspectives, Vol 21, No 3, pp 131-154.

• Please cite this paper if you use these data
• The author thanks the National Science Foundation for funding this project under Award Number 0318242.

Data Figures and Tables in the Paper

table1.xls

table2.xls

FIgures1_4.zip

• This zip file contains all the stata code and stata datasets to generate figures 1-4.

Table2_Figure5_6.zip

• This (large -- 50 MB) zip file contains all the stata code and datasets to generate table 2 and figures 5 and 6.
• Of special note, it contains "sitcreallysmall_allyears.dta".  This is a data set covering US imports from 1974-2004, with detail on exporting country x SITC revision 2 (5 digit) commodity x transport mode.  It contains shipment values, weight, quantity, tariffs, and transportation charges.

Additional Supporting Data

Modal Quantities

sea transport growth statistics.xls

IATA air transport growth statistics.xls

Modal Prices

bls air price indices.xls  (Bureau of Labor Statistics index number price data on air passenger and air freight)

icao data.xls    (International Civil Aviation Organization data on air fares and air freights by international region 1973-1993)

• definition of icao route groups.pdf

ocean price indices.xls   (Various index numbers for ocean shipping prices from 1948 onward)

per commodity ad-valorem rates.xls  (liner shipping rates for specific commodities 1963-2004)