| Year | Value (Population) |
|---|---|
|
2022 |
32392242 |
|
2021 |
30738943 |
|
2020 |
29162717 |
|
2019 |
27641474 |
|
2018 |
26173961 |
|
2017 |
24719447 |
|
2016 |
23280345 |
|
2015 |
21879280 |
|
2014 |
20567342 |
|
2013 |
19355511 |
| Proportion of population served with piped water | 26935374 | Population (2022) |
| Proportion of population with unimproved water | 7122167 | Population (2022) |
| Proportion of population with surface water | 7951469 | Population (2022) |