| Year | Value (Population) |
|---|---|
|
2022 |
21445065 |
|
2021 |
20201802 |
|
2020 |
18831285 |
|
2019 |
17484599 |
|
2018 |
16251741 |
|
2017 |
15090516 |
|
2016 |
13996471 |
|
2015 |
13000522 |
|
2014 |
11991753 |
|
2013 |
10983808 |
| Proportion of population served with piped water | 9631276 | Population (2022) |
| Proportion of population with unimproved water | 4309243 | Population (2022) |
| Proportion of population with surface water | 2540029 | Population (2022) |