What is your constant U.S. dollar methodology?

Our constant U.S. dollar price series preserve the growth rates exhibited in the constant local price series. We first create an index by dividing each year of the constant local price series by its 2010 value (thus, 2010 will equal 1). Then we multiply each year's index result by the corresponding year 2010 current U.S. dollar price value. Dollar figures are converted from local currencies using year 2010 official exchange rates. For a few countries where the official exchange rates do not reflect the rate effectively applied to actual foreign exchange transactions, alternative conversion factors are used.

It is possible that a country will have reported values for gross domestic product (GDP) in local current prices, but not constant prices—or in constant prices but not current prices. This occurs if there are breaks in series or the originally reported growth rates appear to be unrealistic—or growth estimates are available, but actual current price data are not. Constant price U.S. dollar series may also be missing if local price series are missing for the year 2010.

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