| Year | Value (%) |
|---|---|
|
2021 |
1.76 |
|
2020 |
1.75 |
|
2019 |
1.78 |
|
2018 |
1.77 |
|
2017 |
1.79 |
|
2016 |
1.69 |
|
2015 |
1.65 |
|
2014 |
1.54 |
|
2013 |
1.67 |
|
2012 |
1.73 |