| Year | PToutP | Base 100 |
|---|---|---|
| 2008 | 91.01% | 100 |
| 2009 | 93.27% | 100 |
| 2011 | 92.48% | 100.1 |
| 2012 | 92.98% | 100.2 |
| 2013 | 93.37% | 100.2 |
| 2014 | 94.31% | 100.3 |
| 2015 | 95.72% | 100.3 |
| 2016 | 94.18% | 100.4 |
| 2017 | 93.82% | 100.4 |
| 2018 | 92.61% | 100.5 |
| 2019 | 89.36% | 100.5 |
| 2020 | 90.3% | 100.6 |
| 2021 | 87.82% | 100.6 |
| 2022 | 100% | 100.7 |
| 2023 | 96.52% | 100.7 |
