Share of of world citizens living under different political systems (1816-2015) Our World This visualisation is based on the Polity IV data:The Polity IV score captures the type of political regime for each country on a range in Data from-10(full autocracy)to +10(full democracy).Regimes that fall into the middle of this spectrum are called anocracies. 100% Population living in a country in transition 100% or for which there is no data 90% 90% 80% Population living in a 80% 70% country ruled as a colony 70% 60% 60% 50% 50% Population living under 40% Closed anocracy 40% an authoritarian regime 30% 30% 20% 20% Open anocracy 10% 10% Population living in a democracy 0% 0% 1816 1840 1860 1880 1900 1920 1940 1960 1980 2000201 Data source:Polity IV data on political regime;Wimmer and Min (2006)on colonies;Gapminder and OurWorldlnData data on population by country and the world. The interactive data visualization is available at OurWorldinData.org.There you find the raw data and more visualizations on this topic. Licensed under CC-BY-SA by the author Max Roser