Tonga population rate of natural increase (RNI) 1950 to 2100
| Year | Rate of Natural Increase | Population |
|---|---|---|
| 1990 | 2.768 | 96,234 |
| 1995 | 2.708 | 97,370 |
| 2000 | 2.574 | 100,077 |
| 2005 | 2.41 | 103,264 |
| 2010 | 2.094 | 105,623 |
| 2015 | 1.808 | 106,470 |
| 2020 | 1.591 | 106,010 |
| 2024 | 1.477 | 104,889 |
| 2025 | 1.445 | 104,519 |
| 2026 | 1.423 | 104,129 |
| 2030 | 1.293 | 102,487 |
| 2035 | 1.113 | 100,169 |
| 2040 | 0.891 | 97,392 |
| 2045 | 0.653 | 94,047 |
| 2050 | 0.433 | 90,196 |
| 2055 | 0.283 | 88,739 |
| 2060 | 0.22 | 89,852 |
| 2065 | 0.174 | 90,742 |
| 2070 | 0.118 | 91,412 |
| 2075 | 0.035 | 91,767 |
| 2080 | -0.059 | 91,710 |
| 2085 | -0.138 | 91,245 |
| 2090 | -0.196 | 90,474 |
| 2095 | -0.23 | 89,507 |
| 2100 | -0.241 | 88,451 |
Data from US Census International Database