Source: University of Groningen  

Source: University of California, Davis  

Release: Penn World Table 10.01  

Units:  Index USA = 1, Not Seasonally Adjusted

Frequency:  Annual

Source ID: ctfp

When using these data in your research, please make the following reference: Feenstra, Robert C., Robert Inklaar and Marcel P. Timmer (2015), "The Next Generation of the Penn World Table" American Economic Review, 105(10), 3150-3182, available for download at www.ggdc.net/pwt

For more information, see http://www.rug.nl/research/ggdc/data/pwt/.