| Year | PToutP | Base 100 |
|---|---|---|
| 2009 | 96.95% | 100 |
| 2011 | 92.92% | 100.1 |
| 2012 | 94.08% | 100.1 |
| 2013 | 93.68% | 100.2 |
| 2014 | 92.69% | 100.2 |
| 2015 | 93.58% | 100.3 |
| 2016 | 100% | 100.3 |
| 2017 | 98.78% | 100.4 |
| 2018 | 95.73% | 100.4 |
| 2019 | 94.78% | 100.5 |
| 2020 | 94.32% | 100.5 |
| 2021 | 99.25% | 100.6 |
| 2022 | 99.32% | 100.6 |
| 2023 | 88.82% | 100.7 |
