| Year | PToutP | Base 100 |
|---|---|---|
| 2009 | 87.51% | 100 |
| 2010 | 90.56% | 100.1 |
| 2011 | 94.39% | 100.3 |
| 2012 | 95.43% | 100.4 |
| 2013 | 98.93% | 100.6 |
| 2014 | 98.3% | 100.7 |
| 2015 | 98.23% | 100.9 |
| 2016 | 97.58% | 101 |
| 2017 | 100% | 101.2 |
| 2018 | 96.27% | 101.3 |
| 2019 | 95.84% | 101.5 |
| 2020 | 95.28% | 101.6 |
| 2021 | 93.01% | 101.8 |
| 2022 | 90.09% | 101.9 |
