Study the table below, which shows the population growth of Lagos, Nigeria, between 1990 and 2025.
Population of Lagos (1990–2025)
| Year | Population (millions) |
|---|---|
| 1990 | 4.8 |
| 1995 | 6.1 |
| 2000 | 7.3 |
| 2005 | 8.9 |
| 2010 | 10.8 |
| 2015 | 13.1 |
| 2020 | 14.9 |
| 2025 | 16.5 |
Identify the 5-year period during which the population of Lagos increased by exactly 1.9 million.
2000 to 2005
2005 to 2010
2010 to 2015
2015 to 2020
