Although the Map & Data Library is physically closed, we are still available remotely and happy to help. We can conduct consultations using online teleconferencing software. Please feel free to contact us at or use our help form. We have a number of tutorials available, are still supplying software licenses, and have compiled a list of resources for working with COVID-19 data.

Please note that our computer lab is also accessible for use through remote access. See this link for more information.

COVID-19: Updates on library services and operations

Penn world tables version 6.1

Constructed by Robert Summers and Alan Heston of the University of Pennsylvania, together with the late Irving Kravis, the Penn World Tables are the definitive source for real national accounts data. The national accounts for each country, initially in their own currencies, are adjusted using detailed price data to obtain real national accounts in a common currency (U.S. dollars) across countries. These data are invaluable for making comparisons of Gross Domestic Product across countries, and for all manner of research on development and growth.

Alternative title: 
Penn world tables version 6.1. Oct. 2002 ed.
Series title: 
Penn world tables
Data creator: 
Heston, Alan, Robert Summers and Bettina Aten
Date of creation: 
Philadelphia, PA: University of Pennsylvania. Center for International Comparisons (CICUP)
Date of distribution: 
2003 Jun 9th
Geographic coverage: 

international, 168 countries

Time period: 
Mode of data collection: 

Derived. PWT6.0 was mainly based on the World Development Indicators (WDI) 2000 disk, while PWT6.1 uses the WDI 2002 national accounts for non-OECD countries, and the OECD 2002 (see Electronic Publications and National Accounts of OECD countries: Main Aggregates 1970/2000 2002 Edition Volume 1) national accounts for 30 OECD countries. Data for years not in the WDI or OECD disks are obtained from previous national accounts files used in PWT5.6 and earlier versions. The underlying National Accounts files for PWT6.1 (current and constant 1996 series in local currencies for GDP components) is now provided as a file (see Downloads) with the permission of the World Bank and the OECD.

Extent of file: 
2 data filex (6,536 and 321 logical records) & accompanying documentation

Base year is 1996.

Funding agency: 
National Science Foundation grant no., 9911377
Access status: