- Students studying abroad: Total number of post-secondary students who were studying abroad during given year.
- Students studying abroad per thousand people: Total number of post-secondary students who were studying abroad during given year. Figures expressed per thousand people for the same year.
- Students studying abroad proportion: The number of students from a given country studying abroad in a given year, expressed as a percentage of total tertiary enrollment in that country. Ratios greater than 100 % are possible, because those currently studying abroad do not count towards total enrollment.
SOURCES: UNESCO Institute for Statistics. Source tables; UNESCO Institute for Statistics. Source tables. Population figures from World Bank: (1) United Nations Population Division. World Population Prospects, (2) United Nations Statistical Division. Population and Vital Statistics Report (various years), (3) Census reports and other statistical publications from national statistical offices, (4) Eurostat: Demographic Statistics, (5) Secretariat of the Pacific Community: Statistics and Demography Programme, and (6) U.S. Census Bureau: International Database.; UNESCO Institute for Statistics. Source tables