Somali fertility is actually rising whereas for everyone else, except the Afar, it is falling. This tells you all you need to know about how brutal Meles’s campaign against the ONLF was. The Somali region missed out on a decade of very high growth. It is making it up now it seems.
https://www.unicef.org/ethiopia/Components_of_Fertility_Change_in_Ethiopia.pdf
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4642368/#!po=33.6066
https://www.unicef.org/ethiopia/Components_of_Fertility_Change_in_Ethiopia.pdf
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4642368/#!po=33.6066