| Year | Value (%) |
|---|---|
|
2021 |
17.63 |
|
2020 |
17.45 |
|
2019 |
17.44 |
|
2018 |
17.45 |
|
2017 |
17.47 |
|
2016 |
17.48 |
|
2015 |
17.08 |
|
2014 |
17.1 |
|
2013 |
17.11 |
|
2012 |
17.13 |