| Year | Value (cubic meters per year) |
|---|---|
|
2020 |
19.44 |
|
2019 |
19.77 |
|
2018 |
20.13 |
|
2017 |
20.55 |
|
2016 |
21.1 |
|
2015 |
21.83 |
|
2014 |
22.77 |
|
2013 |
23.97 |
|
2012 |
25.5 |
|
2011 |
27.51 |
| Surface water produced internally | billion cubic meters per year (2018) | |
| Groundwater produced internally | 0.06 | billion cubic meters per year (2020) |
| Overlap between surface and groundwater | billion cubic meters per year (2018) | |
| Internal renewable water resources | 0.06 | billion cubic meters per year (2020) |