| Year | PToutP | Base 100 |
|---|---|---|
| 2009 | 100% | 100 |
| 2010 | 87.56% | 99.4 |
| 2011 | 85.43% | 98.8 |
| 2012 | 85.18% | 98.1 |
| 2013 | 81.16% | 97.5 |
| 2014 | 80.91% | 96.9 |
| 2015 | 80.46% | 96.3 |
| 2016 | 87.04% | 95.7 |
| 2017 | 87.5% | 95.1 |
| 2018 | 85.71% | 94.4 |
| 2019 | 86.34% | 93.8 |
| 2020 | 84.74% | 93.2 |
| 2021 | 86.57% | 92.6 |
| 2022 | 77.67% | 92 |
