Data used in World Health Chart 2017 (pdf-version)
This describes the sources used in the World Health Chart interactive tool, and the print out called World Health Chart 2017.
— Countries: The graph shows all 195 states recognized by the UN, which includes 193 member states and 2 observing states. (In the printed version we have removed five tiny islands because it got too crowded with their long names.)
— Color: The colors of the bubbles show the four regions, defined and color coded by Gapminder, which we use in all our graphs.
— Size: The area of each bubble corresponds to the number of citizens in the country, using estimates for 2017 from UN Population Division, the World Population Prospects 2017. For the animated chart, data before 1950 comes from many historic sources, documented in our Population indicator version 5.
— Y-axis: Life expectancy is based on the 2016 data from IHME (Institute for Health Metrics and Evaluation) at University of Washington in Seattle, published in September, 2017. The animated charts use many historic sources, combined by Gapminder and documented in our Life Expectancy version 9.
— X-axis: GDP per capita in constant PPP dollars with 2011 prices, based on World Bank’s data for 2016 extended with IMF forecasts, from World Economic Outlook 2017 – October edition. This is part of our GDP series, documented in greater detail here.
— Income Levels: The vertical lines divide the graph into four income levels. Defintions, together with more details, will soon be available here.
Gapminder Documentation 000 – version 1
(Formerly called Gapminder Documentation 2007-1.)