IMF figures for the current year and later are projections from the World Economic Outlook and change with each edition; earlier IMF years can still be estimates. Some economies report on a fiscal year rather than a calendar year, and the source data do not record each country-specific fiscal-year mapping, so the same year label may not cover the same twelve months everywhere.
Nominal GDP is converted from the IMF's billions of US dollars to US dollars at market exchange rates; it is not output at purchasing power parity. GDP per person is already in dollars per person.
World Bank population figures are midyear estimates. Population growth is the exponential change between successive midyear populations, expressed as an annual percentage. A population count and a growth rate can refer to different years.
Totals include only the economies and years described with them. Missing readings are not zero. Growth, inflation, unemployment and debt percentages are not added up or averaged into a world or group rate, and GDP per person is not calculated by dividing totals from different years or coverage.
These are the figures currently stored, not a single fixed edition. Open a value for its series and history.