Sources
UNDESA
U
W
U
United Nations LINK Global Economic Outlook, October 2017
W
World Population Prospects: The 2012 Revision (Updated: 13 June 2013)
World Population Prospects: The 2017 Revision
World Urbanization Prospects, The 2014 Revision - Urban and Rural Population, June 2015
World Urbanization Prospects: The 2014 Revision - Urban Agglomerations