| Year | PToutP | Base 100 |
|---|---|---|
| 2010 | 96.82% | 100 |
| 2011 | 94.77% | 100.2 |
| 2012 | 94.45% | 100.4 |
| 2013 | 92.86% | 100.6 |
| 2014 | 95.85% | 100.9 |
| 2015 | 95.87% | 101.1 |
| 2016 | 95.88% | 101.3 |
| 2017 | 100% | 101.5 |
| 2018 | 96.83% | 101.7 |
| 2019 | 94.57% | 101.9 |
| 2020 | 97.11% | 102.1 |
| 2021 | 94.61% | 102.3 |
| 2022 | 98.93% | 102.6 |
| 2023 | 97.94% | 102.8 |
