File:Gdp20-40.jpg

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Description	USA GDP annual pattern and long-term trend, 1920-40, in billions of constant dollars, based on data in Susan Carter, ed. Historical Statistics of America: Millennial Edition (2006) series Ca9.
Date
Source	en.wikipedia.org http://en.wikipedia.org/wiki/Image:Gdp20-40.jpg
Author	This file is lacking author information.

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