Country population rate of natural increase (RNI) and rank for world countries for the year 1956
| Rank | Country | Rate of Natural Increase | Population |
|---|---|---|---|
| 1 | Nigeria | 2.782 | 37,007,510 |
| 2 | Bhutan | 2.588 | 191,164 |
| 3 | Djibouti | 2.211 | 92,839 |
| 4 | Guinea | 1.629 | 2,830,374 |
Data from US Census International Database