Resources:

https://www.guttmacher.org/report/unmet-need-for-contraception-in-developing-countries

http://www.who.int/news-room/fact-sheets/detail/family-planning-contraception

https://www.who.int/bulletin/volumes/89/4/10-083329/en/

https://www.focus-economics.com/blog/the-poorest-countries-in-the-world

https://www.unfpa.org/family-planning

https://www.ncbi.nlm.nih.gov/pubmed/26956690

https://womenintheworld.com/2015/09/26/why-222-million-women-cant-get-the-birth-control-they-need/