Sources:

https://www.economist.com/middle-east-and-africa/2019/08/15/has-rwanda-been-fiddling-its-numbers

https://www.ft.com/content/eb704c98-6cbe-11e2-953f-00144feab49a

https://voxeu.org/article/new-evidence-potentially-harmful-effects-state-breakup

CIA World Factbook 1984 Studies listed below.

Studies: