| Year | PToutP | Base 100 |
|---|---|---|
| 2008 | 100% | 100 |
| 2009 | 97.37% | 98.6 |
| 2010 | 93.92% | 97.3 |
| 2011 | 87.06% | 95.9 |
| 2012 | 88.75% | 94.6 |
| 2013 | 83.76% | 93.2 |
| 2014 | 84.96% | 91.8 |
| 2015 | 80.56% | 90.5 |
| 2016 | 74.35% | 89.1 |
| 2017 | 77.81% | 87.8 |
| 2018 | 79.96% | 86.4 |
| 2019 | 75.42% | 85.1 |
| 2020 | 79.24% | 83.7 |
| 2021 | 86.47% | 82.3 |
| 2022 | 82.53% | 81 |
