Get a conversion factor to convert GDP in constant 2017 Int$PPP into constant 2017 US$MER. Use the "when" argument to switch the year of the conversion factor. Source = WDI. Countries with missing data are filled in with 1. Regional aggregation is weighed by GDP from WDI-MI in the year set by "when".
Value
magpie object with the requested output data either on country or on regional level depending on the choice of argument "aggregate" or a list of information if supplementary is set to TRUE.