| Year | Value (Population) |
|---|---|
|
2016 |
452636 |
|
2015 |
452775 |
|
2014 |
454020 |
|
2013 |
453760 |
|
2012 |
451103 |
|
2011 |
476603 |
|
2010 |
499387 |
|
2009 |
520793 |
|
2008 |
538824 |
|
2007 |
558292 |
| Proportion of population served with at least basic water | 13077890 | Population (2022) |
| Proportion of population served with piped water | 1742024 | Population (2016) |
| Proportion of population with surface water | 575561 | Population (2016) |