Temporal Info: 
People (thousands)
World Bank 2016

United Nations Population Division. World Population Prospects: 2017 Revision. Census reports and other statistical publications from national statistical offices, Eurostat: Demographic Statistics, United Nations Statistical Division. Population and Vital Statistics Reprot ( various years ), U.S. Census Bureau: International Database, and Secretariat of the Pacific Community: Statistics and Demography Programme.

Population is total number of people residing within a country in a given year. The data is compiled by the Population Division of the Department of Economic and Social Affairs of the United Nations Secretariat using census and survey results from each countries. One should keep in mind that data reliability varies among countries, but the U.N. demographic models are widely accepted because they employ well-understood assumptions.