2015 20 RICHEST AFRICAN COUNTRIES: YOU WONT BELIEVE WHAT NUMBER NIGERIA IS.

1. NAMIBIA
GDP: $15.743 BILLION (FOREIGN EXCHANGE RESERVE:$2,267 MILLION)

2. MAURITIUS
GDP: $19.270 BILLION (FOREIGN EXCHANGE RESERVE:$3,919 MILLION)

3. GABON 
GDP: $24.571 BILLION (FOREIGN EXCHANGE RESERVE:$2,470 MILLION)

4. EQUATORIAL GUINEA
GDP: $26.147 BILLION (FOREIGN EXCHANGE RESERVE:$4,027 MILLION)

5. BOTSWANA
GDP: $29.707 BILLION (FOREIGN EXCHANGE RESERVE:$7,993 MILLION)

6. DEMOCRATIC REPUBLIC OF CONGO
GDP: $32.69 BILLION (FOREIGN EXCHANGE RESERVE:$5,239 MILLION)

7. TANZANIA
GDP: $41.33 BILLION (FOREIGN EXCHANGE RESERVE:$4,758 MILLION)

8. CAMEROON
GDP: $48.14 BILLION (FOREIGN EXCHANGE RESERVE:$3,353 MILLION)

9. KENYA
GDP: $53.40 BILLION (FOREIGN EXCHANGE RESERVE:$5,541 MILLION)

10. LIBYA
GDP: $76.52 BILLION (FOREIGN EXCHANGE RESERVE:$120,900 MILLION)

11. GHANA 
GDP: $82.65 BILLION (FOREIGN EXCHANGE RESERVE:$8,113 MILLION)

12. TUNISIA
GDP: $104 BILLION (FOREIGN EXCHANGE RESERVE:$7,198 MILLION)

13. ETHIOPIA
GDP: $109 BILLION (FOREIGN EXCHANGE RESERVE:$3,382 MILLION)

14. SUDAN
GDP: $112.552 BILLION (FOREIGN EXCHANGE RESERVE:$202 MILLION)

15. ANGOLA
GDP: $123.1 BILLION (FOREIGN EXCHANGE RESERVE:$37,940 MILLION)

16. MOROCCO
GDP: $168.9 BILLION (FOREIGN EXCHANGE RESERVE:$19,160 MILLION)

17. ALGERIA 
GDP: $272.5 BILLION (FOREIGN EXCHANGE RESERVE:$192,500 MILLION)

18. NIGERIA
GDP: $521.8 BILLION (FOREIGN EXCHANGE RESERVE:$32,386 MILLION)

19. EGYPT
GDP: $5341.1 BILLION (FOREIGN EXCHANGE RESERVE:$14,877 MILLION)

20. SOUTH AFRICA
GDP: $576.1 BILLION (FOREIGN EXCHANGE RESERVE:$47,190 MILLION)

A Nation's GDP at purchasing power parity (PPP) exchange rates is the sum value for all goods and services produced in the country in any given year assessed based on prevailing prices of the same products in the United States. This is the measure adopted by most economists when comparing living conditions or use of resources across countries.