The GDPs of all nations around the world are from Summers, Robert and Heston, Alan, “A New Set of Global Comparisons of True Products and Selling price Stage Estimates for one hundred thirty Countries, 1950–1985,” Review of Income and Prosperity 34 (03 1988), pp. 1–26CrossRefGoogle Scholar. These estimates are https://lorenzx234fcz1.robhasawiki.com/user