Polity scores reflect how democratic or autocratic countries are from a scale of -10 (autocratic) to 10 (democratic). There are also three special codes for foreign "interruption" (-66), anarchy (-77), and transition periods (-88).
The data are included here for as an example for use with the missing plot. Thus they do not contain all available Polity indicators, which are available at the Polity project website www.systemicpeace.org.
Correlates of War (COW) country code.
Year of the observation.
Combined Polity score.
Marshall, Monty G., Ted Robert Gurr, and Keith Jaggers. 2017. “Polity IV Project: Dataset Users' Manual.” http://www.systemicpeace.org/inscr/p4manualv2016.pdf
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