| Year | PToutP | Base 100 |
|---|---|---|
| 2009 | 100% | 100 |
| 2010 | 95.09% | 99.8 |
| 2011 | 93.06% | 99.7 |
| 2012 | 95% | 99.5 |
| 2013 | 96.69% | 99.4 |
| 2014 | 96.33% | 99.2 |
| 2015 | 95.42% | 99 |
| 2016 | 95.12% | 98.9 |
| 2017 | 96.38% | 98.7 |
| 2018 | 97.44% | 98.6 |
| 2019 | 97.03% | 98.4 |
| 2020 | 93.46% | 98.2 |
| 2021 | 93.64% | 98.1 |
| 2022 | 94.17% | 97.9 |
