| Year | Value (%) |
|---|---|
|
2021 |
17.17 |
|
2020 |
17.17 |
|
2019 |
19.23 |
|
2018 |
19.43 |
|
2017 |
19.43 |
|
2016 |
16.92 |
|
2015 |
16.53 |
|
2014 |
19.78 |
|
2013 |
21.57 |
|
2012 |
23.37 |