| Year | PToutP | Base 100 |
|---|---|---|
| 2009 | 95.17% | 100 |
| 2010 | 93.43% | 100.4 |
| 2011 | 93.82% | 100.9 |
| 2012 | 92.05% | 101.3 |
| 2013 | 92.79% | 101.7 |
| 2014 | 95.43% | 102.2 |
| 2015 | 94.78% | 102.6 |
| 2016 | 91.73% | 103 |
| 2017 | 100% | 103.5 |
| 2018 | 98.81% | 103.9 |
| 2019 | 97.61% | 104.4 |
| 2020 | 97.66% | 104.8 |
| 2021 | 98.05% | 105.2 |
| 2022 | 96.64% | 105.7 |
