Original sentence: Eritrea's 1990 population was estimated by UN DESA as 3.158 million in its 2010 estimate, and revised down to a 1990 population of 2.258 million in UN DESA's 2019 data release.In 2019, the population had risen to 3.497 million according to the UN DESA 2019 estimate or to 6.7 million according to the Common Market for Eastern and Southern Africa
Edited sentence: Eritrea's population increased from 3.2 million to approximately 5,755,124 between 1990 and 2020