Income
Recent historical income (GDP) data comes primarily from the World Bank’s World Development Indicators Online,[1] which contains data for national income from 1960 to 2012 for almost all of the 195 countries in the database. For most of the missing countries or territories, data comes from the CIA World Factbook.[2] For data prior to 1960 or other missing years, data comes from the Maddison data set.[3]
Data is reported in $2010 US, at market exchange rates (MER). Conversion to PPP (2005) is based on converting “Current US Dollars” for 2005 to PPP (Current International Dollars). The PPP conversion rate is held constant at this value.
Income (GDP) projections from 2013-2018 are from the IMF’s World Economic Outlook (April 2013).[4] Projected growth rates are applied to the most recent World Bank national GDP data (in most cases 2012); long term estimates (to 2030) are based on the McKinsey Climate Desk 2.1 dataset.[5][6] Convergence between IMF and McKinsey growth rates is described in detail in Definition, sourcing, and updating of emissions baselines.[7]