| 2000 | 2012 | |
|---|---|---|
| Zambia | 8.0 | 11.0 |
| Libya | 16.0 | 19.0 |
| Somalia | 7.0 | 12.0 |
| Kenya | 7.0 | 10.0 |
| Eritrea | 45.0 | 12.0 |
| Burundi | 12.0 | 12.0 |
| Zimbabwe | 5.0 | 9.0 |
| Malawi | 4.0 | 7.0 |
| Mauritius | 11.0 | 11.0 |
| Ethiopia | 10.0 | 11.0 |
| Comoros | 10.0 | 12.0 |
| Eswatini | 8.0 | 10.0 |
| Sudan | 13.0 | 14.0 |
| Uganda | 8.0 | 13.0 |
| Egypt | 6.0 | 7.0 |
| Rwanda | 8.0 | 14.0 |
| Tunisia | 13.0 | 11.0 |
| Djibouti | 9.0 | 10.0 |
| Democratic Republic of the Congo | 8.0 | 10.0 |
| Madagascar | 9.0 | 12.0 |