| Year | Value (%) |
|---|---|
|
2021 |
2.77 |
|
2020 |
2.84 |
|
2019 |
2.7 |
|
2018 |
2.22 |
|
2017 |
2.36 |
|
2016 |
2.73 |
|
2015 |
2.78 |
|
2014 |
2.83 |
|
2013 |
2.88 |
|
2012 |
2.93 |