| Year | Value (%) |
|---|---|
|
2021 |
7.58 |
|
2020 |
7.52 |
|
2019 |
7.62 |
|
2018 |
7.71 |
|
2017 |
7.65 |
|
2016 |
6.87 |
|
2015 |
6.98 |
|
2014 |
6.91 |
|
2013 |
6.83 |
|
2012 |
6.62 |
| Freshwater withdrawal | 1.76 | % (2021) |