Sources, Notices

* Value is calculated with linear interpolation from 2 nearest estimated (date->population) data (unofficial).** Net migration is included in Births with this calculation: Births = Population[1] + Deaths[1].*** For years before 1950 we dont have population data. Value is approximate calculation using function: 1900 population = 70% of 1950 population. [1] United Nations, Department of Economic and Social Affairs, Population Division (2015). World Population Prospects: The 2015 Revision. Data are estimates and projections according to a medium-fertility variant. Reused with the permission of the United Nations. Downloaded: 2015-11-15 (un.org) [2] City density map, generated by population.city using data provided to us by 1km.net website. Every circle is city with population over 5000. Link [3] Population density map generated by instructions from daysleeperrr on reddig. Link1 . Used data source is the Gridded Population of the World (GPW), v3 online at the the Socioeconomic Data and Applications Center (SEDAC) at Columbia University. Link2 . Additional urban land cover: Extracted from Global Land Cover Characteristics Data Base Version 2.0 and Binary MOD12Q1 data on shadedrelief.com. Link3 (PNG,0.5Mb).