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Where did the Data in the Countries Table Come From?

Our data is gathered from official sources such as the United Nations, the World Bank, the CIA World Factbook, and national statistics agencies, as well as from credible private organizations like research institutes and think tanks. We update it regularly so you always have the most accurate information about countries around the world.

UN – United Nations Population Division


World countries population data found in the articles is updated from United Nations website, in the Population Division at
https://hdr.undp.org/data-center/human-development-index#/indicies/HDI

HDI – Human Development Index


The Human Development Index (HDI) is a composite statistic used to measure and compare the overall well-being of people in different countries, combining indicators of health (life expectancy), education (mean and expected years of schooling), and standard of living (gross national income per capita). It is compiled and published annually by the Human Development Report Office within the United Nations Development Programme (UNDP), under the editorial oversight of the United Nations General Assembly to ensure its independence and credibility. The HDI draws upon the latest data from a wide range of reputable public international organizations—such as the World Health Organization, UNESCO, and the World Bank—and is frequently used by national and regional analysts to inform policy debates and track progress over time.

https://hdr.undp.org/data-center/human-development-index#/indicies/HDI

International Monetary Growth by IMF – International Monetary Fund

GDP – Growth Domestic Product

https://www.imf.org/external/datamapper/NGDP_RPCH@WEO/OEMDC/ADVEC/WEOWORLD

EF English Proficiency Index (EPI)


The EF English Proficiency Index (EF EPI), produced by EF Education First, measures how well adults around the world speak English based on a free online test. In the 2024 edition, 2.1 million self-selected test-takers in 2023 from 116 countries (each with at least 400 participants) were ranked on a 0–600 scale. Scores are grouped as:

  • 600 and above
  • 550–599
  • 500–549
  • 450–499
  • Below 450

https://www.ef.com/wwen/epi/

download the EPI 2024 report here

Henley Passport Index


The Henley Passport Index uses information from the International Air Transport Association (IATA) to show which passports offer the most travel freedom around the world, based on how many places citizens can visit without needing a visa.

The index reviews 199 passports and checks how many of 227 destinations (including countries, territories, and regions) each passport holder can access without applying for a visa in advance. https://www.iata.org/en/services/compliance/timatic/
https://www.henleyglobal.com/passport-index/ranking

PS: Not every place issues passports, so there are more destinations than passports in the ranking.