Country population rate of natural increase (RNI) and rank for world countries for the year 1958
| Rank | Country | Rate of Natural Increase | Population |
|---|---|---|---|
| 1 | Nigeria | 2.798 | 39,213,328 |
| 2 | Bhutan | 2.593 | 201,329 |
| 3 | Djibouti | 2.255 | 101,060 |
| 4 | Guinea | 1.693 | 2,922,277 |
Data from US Census International Database