Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Country | Total GDP (nominal)\n(billion US$) | GDP per capita\n(US$, PPP) | GDP Growth,\n2007-2011\n(in %) | HDI |
| --- | --- | --- | --- | --- |
| Algeria | 188.7 | 8,715 | 2.7 | 0.733 |
| Angola | 101.0 | 5,930 | 9.1 | 0.446 |
| Benin | 7.3 | 1,628 | 3.9 | 0.437 |
| Botswana | 17.6 | 14,753 | 3.0 | 0.654 |
| Burkina Faso | 10.2 | 1,310 | 4.9 | 0.370 |
| Burundi | 2.3 | 608 | 4.3 | 0.413 |
| Cameroon | 25.5 | 2,383 | 3.1 | 0.532 |
| Cape Verde | 1.9 | 4,123 | 5.8 | 0.736 |
| Central African Republic | 2.2 | 816 | 2.8 | 0.384 |
| Chad | 9.5 | 1,531 | 2.9 | 0.388 |
| Comoros | 0.6 | 1,117 | 1.5 | 0.561 |
| Democratic Republic of the Congo | 15.6 | 375 | 5.9 | 0.411 |
| Congo | 14.7 | 4,429 | 4.9 | 0.548 |
| Ivory Coast | 24.1 | 1,803 | 1.1 | 0.432 |
| Djibouti | 1.0 (2009) | 2,290 (2009) | 5.3 | 0.516 |
| Egypt | 229.5 | 6,324 | 5.2 | 0.708 |
| Equatorial Guinea | 19.8 | 36,515 | 8.8 | 0.642 |
| Eritrea | 2.6 | 589 | 1.3 | 0.483 |
| Ethiopia | 31.7 | 1,116 | 9.7 | 0.406 |
| Gabon | 17.1 | 15,960 | 3.6 | 0.677 |
| Gambia | 1.1 | 2,135 | 6.0 | 0.502 |
| Ghana | 39.2 | 1,884 | 8.3 | 0.553 |
| Guinea | 5.1 | 1,128 | 2.4 | 0.456 |
| Guinea-Bissau | 1.0 | 1,251 | 3.6 | 0.374 |
| Kenya | 33.6 | 1,718 | 4.2 | 0.521 |
| Lesotho | 2.4 | 1,715 | 4.9 | 0.549 |
| Liberia | 1.2 | 577 | 11.6 | (N/A) |
| Libya | 62.4 (2009) | 16,855 (2009) | 4.0 | 0.769 |
| Madagascar | 9.9 | 972 | 2.3 | 0.533 |
| Malawi | 5.7 | 918 | 6.8 | 0.437 |
| Mali | 10.6 | 1,099 | 4.5 | 0.380 |
| Mauritania | 4.1 | 2,571 | 2.8 | 0.550 |
| Mauritius | 11.3 | 14,523 | 4.5 | 0.804 |
| Morocco | 100.2 | 4,986 | 4.3 | 0.646 |
| Mozambique | 12.8 | 982 | 6.9 | 0.384 |
| Namibia | 12.3 | 6,826 | 3.7 | 0.650 |
| Niger | 6.0 | 732 | 4.3 | 0.374 |
| Nigeria | 235.9 | 2,532 | 6.8 | 0.670 |
| Réunion (France) | 15.98 | 8,233 (nominal) |  | 0.850 (2003) |
| Rwanda | 6.4 | 1,251 | 7.3 | 0.452 |
| São Tomé and Príncipe | 0.2 | 2,058 | 5.7 | 0.654 |
| Senegal | 14.3 | 1,981 | 3.5 | 0.499 |
| Seychelles | 1.0 | 26,420 | 4.2 | 0.843 |
| Sierra Leone | 2.2 | 877 | 5.2 | 0.336 |
| Somalia | (N/A) | (N/A) | (N/A) | (N/A) |
| South Africa | 408.2 | 11,035 | 2.7 | 0.674 |
| South Sudan |  |  |  |  |
| Sudan | 55.1 | 2,141 | 4.1 | 0.526 |
| Swaziland | 4.0 | 6,099 | 2.1 | 0.547 |
| Tanzania | 23.7 | 1,521 | 6.8 | 0.467 |
| Togo | 3.6 | 1,042 | 3.1 | 0.512 |
| Tunisia | 45.9 | 9,415 | 3.0 | 0.766 |
| Uganda | 16.8 | 1,354 | 7.4 | 0.505 |
| Zambia | 19.2 | 1,623 | 6.4 | 0.434 |
| Zimbabwe | 9.9 | (N/A) | 0.6 | 0.513 |
Question:
which is the top african nation that earns the most gdp in billions?
Answer:
South Africa