Note: Includes all students enrolled for a master’s or doctoral degree at a US institution, full- or part-time. Academic Discipline, Detailed (survey-specific): Sociology (1972 – 2016). Academic Discipline, Detailed (survey-specific): Sociology and population studies (2017 – ). “Criminology” and “Criminal Justice and Safety Studies” are combined in this chart. To maintain historical consistency, “Political Science and Government” in this chart includes “International Relations and National Security Studies” and “Public Policy Analysis,” but excludes “Public Administration” starting from 2017, which has been eliminated as a field.