| Year | Value (cubic meters per year) |
|---|---|
|
2020 |
3399.84 |
|
2019 |
3389.56 |
|
2018 |
3380.44 |
|
2017 |
3372.48 |
|
2016 |
3365.6 |
|
2015 |
3359.77 |
|
2014 |
3354.95 |
|
2013 |
3351.15 |
|
2012 |
3348.29 |
|
2011 |
3346.33 |
| Surface water produced internally | 420 | billion cubic meters per year (2020) |
| Groundwater produced internally | 27 | billion cubic meters per year (2020) |
| Overlap between surface and groundwater | 17 | billion cubic meters per year (2020) |
| Internal renewable water resources | 430 | billion cubic meters per year (2020) |