Illiteracy means lack of education.
Country Adult Illiteracy rate
1. Niger 84.3%
2. Burkina Faso 77.0%
3. Afghanistan 63.7%
4. Sierra Leone 63.7%
5. The Gambia 63.5%
6. Guinea-Bissau 63.2%
7. Senegal 62.7%
8. Benin 62.5%
9. Ethiopia 61.3%
10. Mauritania 60.1%