| Year | Value (Population) |
|---|---|
|
2022 |
19173025 |
|
2021 |
18297152 |
|
2020 |
17413722 |
|
2019 |
16542827 |
|
2018 |
15696080 |
|
2017 |
14882537 |
|
2016 |
14088889 |
|
2015 |
13350659 |
|
2014 |
12673850 |
|
2013 |
12038344 |
| Proportion of population served with piped water | 11057458 | Population (2022) |
| Proportion of population with unimproved water | 5355350 | Population (2022) |
| Proportion of population with surface water | 2131168 | Population (2022) |