| Year | Value (Population) |
|---|---|
|
2022 |
51505507 |
|
2021 |
49279761 |
|
2020 |
47035867 |
|
2019 |
44800788 |
|
2018 |
42606912 |
|
2017 |
40441322 |
|
2016 |
38302355 |
|
2015 |
36189491 |
|
2014 |
34109589 |
|
2013 |
32067241 |
| Proportion of population served with at least basic water | 39446966 | Population (2022) |
| Proportion of population with unimproved water | 2006138 | Population (2022) |
| Proportion of population with surface water | 19638 | Population (2019) |