| Year | Value (%) |
|---|---|
|
2021 |
2.35 |
|
2020 |
2.35 |
|
2019 |
2.35 |
|
2018 |
2.28 |
|
2017 |
2.13 |
|
2016 |
1.99 |
|
2015 |
1.84 |
|
2014 |
1.7 |
|
2013 |
1.55 |
|
2012 |
1.41 |