The GDPs of all nations around the world are from Summers, Robert and Heston, Alan, “A New List of Intercontinental Comparisons of Serious Products and Price Amount Estimates for a hundred thirty International locations, 1950–1985,” Overview of Cash flow and Wealth 34 (03 1988), pp. 1–26CrossRefGoogle Scholar. These estimates https://heywoodj911nam4.wiki-jp.com/user