Real versus nominal value (economics)
Gross domestic product (GDP) is a measure of aggregate output. Nominal GDP in a particular period reflects prices which were current at the time, whereas real GDP compensates for inflation. Price indices and the U.S. National Income and Product Accounts are constructed from bundles of commodities and their respective prices. In the case of GDP, a suitable price index is the GDP price index. In the U.S. National Income and Product Accounts, nominal GDP is called "GDP in current dollars" (that is, in prices current for each designated year), and real GDP is called "GDP in [base-year] dollars" (that is, in dollars that can purchase the same quantity of commodities as in the base year).
List of countries by past and projected GDP (PPP)
This is an alphabetical list of countries by past and projected Gross Domestic Product, based on the Purchasing Power Parity (PPP) methodology, not on market exchange rates. Values are given in USDs. These notional figures have been taken from the International Monetary Fund's World Economic Outlook (WEO) Database, October 2018 Edition. The figures are given or expressed in millions of international dollars.