#UN #ReplacementMigration

https://digitallibrary.un.org/record/412547?v=pdf

www.un.org.development.desa.pd/files/unpd-egm_200010_un_2001_replacementmigration.pdf

United Nations projections indicate that over the next 50 years, the populations of virtually all countries of Europe as well as Japan will face population decline and population ageing. The new challenges of declining and ageing populations will require comprehensive reassessments 

https://digitallibrary.un.org/record/412547/files/unpd-egm_200010_un_2001_replacementmigration.pdf