| Year | Value (Population) |
|---|---|
|
2022 |
22946872 |
|
2021 |
22575905 |
|
2020 |
21442536 |
|
2019 |
20463237 |
|
2018 |
19641099 |
|
2017 |
18838751 |
|
2016 |
18055065 |
|
2015 |
17334138 |
|
2014 |
16690628 |
|
2013 |
16097888 |
| Proportion of population served with piped water | 15324611 | Population (2022) |
| Proportion of population with unimproved water | 1048687 | Population (2022) |
| Proportion of population with surface water | 353393 | Population (2022) |