Penn World Tables 5.6
Last update: July 1998

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Latest version: Penn World Tables 6.3
Other versions: Penn World Tables 6.2 | Penn World Tables 6.1

This World Wide Web service is provided by Computing in the Humanities and Social Sciences (CHASS) at the University of Toronto.

Please note that CHASS only provides access to the data; we are not involved in the collection or maintenance of the data.

For questions or comments regarding the contents of the Penn World Tables please send e-mail to the International Comparisons Projects. ( or go to their web site.

The Penn World Tables (PWT) are described in:

Alan Heston & Robert Summers
The Penn World Table (Mark 5): An Expanded Set of International Comparisons, 1950-1988
Quarterly Journal of Economics, May 1991, pp.327--368.
The table itself, an annex to the article, was distributed to users on a diskette and through anonymous ftp by the National Bureau of Economic Research in Cambridge, Massachusetts. A revised and updated version of PWT 5, PWT 5.5, was made available in 1993. Version 5.6 was released January 1995. It was prepared by Alan Heston and Robert Summers of the University of Pennsylvania, Daniel A. Nuxoll of the Virginia Polytechnic Institute, and Bettina Aten of the University of Illinois at Urbana-Champaign, with the research assistance of Valerie Mercer, James Walsh, and Bao Truong.

The Penn World Tables currently comprise data for 152 countries and 29 subjects.

Starting Points:

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