These data contain a revised and expanded list of population data for states, conforming with the list of independent states outlined in Gleditsch, Kristian Skrede & Michael D. Ward. 1999. "Interstate System Membership: A Revised List of the Independent States since 1816." International Interactions 25:393-413.



  To download the current version (1.0, posted 13 May 2010) of the Expanded Population Data, click here
  See also the readme file for the data.