| Year | PToutP | Base 100 |
|---|---|---|
| 2007 | 100% | 100 |
| 2008 | 98.47% | 100 |
| 2009 | 93.16% | 100.1 |
| 2011 | 94.11% | 100.2 |
| 2012 | 94.95% | 100.2 |
| 2013 | 94.93% | 100.3 |
| 2014 | 95.03% | 100.3 |
| 2015 | 95.08% | 100.4 |
| 2016 | 93.44% | 100.4 |
| 2017 | 94.85% | 100.5 |
| 2018 | 97.54% | 100.5 |
| 2019 | 99.69% | 100.6 |
| 2020 | 96% | 100.6 |
| 2021 | 98.67% | 100.7 |
| 2022 | 97.56% | 100.7 |
