1. Botswana 17.5%
2. Mozambique 17.3%
3. South Africa 15.3
4. Sao Tome and Principe 13.2%
5. Cape Varde 9.0%
6. Ivory Coast 8.1%
7. Republic of the Congo 8.0%
8.. Zimbabwe 7.6%
9. Madagascar 7.3%
10. Togo 6.2%
11. Gabon 5.6%
12. Benin 5.2%
13. Cameroon 5.2%
14. Angola 5.2%
15. Equatorial Guinea 5.0%
16. Guinea Bissau 4.4%
17. Ghana 3.8%
18. Rwanda 3.0%
19. Lesotho 2.8%
20. Chad 2.4%
21. Kenya 2.3%
22. Seychelles 2.1%
Source: World Population Review
These countries boast of plainly being Agnostic, Atheist, e.t.c. there are also laws protecting them from being hassled for their lack of Faith, and they can also sue whenever their freedom from religion is trespassed. Notably, they cannot not be forced to a religious association neither can their children be forced to receive religious teachings at school.
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