| Year | Value (mm per year) |
|---|---|
|
2020 |
43.82 |
|
2019 |
44.68 |
|
2018 |
45.56 |
|
2017 |
46.47 |
|
2016 |
47.4 |
|
2015 |
48.36 |
|
2014 |
49.34 |
|
2013 |
50.34 |
|
2012 |
51.38 |
|
2011 |
52.47 |