| Year | Value (%) |
|---|---|
|
2021 |
2.96 |
|
2020 |
2.92 |
|
2019 |
4.2 |
|
2018 |
3.56 |
|
2017 |
4.06 |
|
2016 |
4.06 |
|
2015 |
3.42 |
|
2014 |
4 |
|
2013 |
4.09 |
|
2012 |
4.18 |