| Year | PToutP | Base 100 |
|---|---|---|
| 2009 | 96.73% | 100 |
| 2010 | 98.06% | 99.7 |
| 2011 | 97.76% | 99.4 |
| 2012 | 96.91% | 99.1 |
| 2013 | 96.18% | 98.8 |
| 2014 | 97.99% | 98.5 |
| 2015 | 100% | 98.2 |
| 2016 | 97.96% | 97.9 |
| 2017 | 98.07% | 97.6 |
| 2018 | 97.21% | 97.3 |
| 2019 | 95.75% | 96.9 |
| 2020 | 95.26% | 96.6 |
| 2021 | 91.87% | 96.3 |
| 2022 | 93.53% | 96 |
