31. Measurement of Cross-cutting Cleavages and Other Multidimensional Cleavage Structures Bookmark Format Series - ongoing
32. Monthly currency exchange rate estimates by market 36 countries, 2126 markets (2007+) Bookmark Format Series - ongoing
34. Polity V: Political Regime Characteristics and Transitions, 1800-2018 Bookmark Format Series - ongoing
35. Population Exposure Estimates in Proximity to Nuclear Power Plants, Locations (1956-2012) Bookmark Format Series - ongoing
40. United Nations Surveys of Crime Trends and Operations of Criminal Justice Systems (1970+) Bookmark Format Series - ongoing