| Year | PToutP | Base 100 |
|---|---|---|
| 2009 | 99.35% | 100 |
| 2011 | 98.53% | 100.1 |
| 2012 | 98.56% | 100.1 |
| 2013 | 100% | 100.2 |
| 2014 | 99.08% | 100.2 |
| 2015 | 95.67% | 100.3 |
| 2016 | 96.68% | 100.3 |
| 2017 | 96.37% | 100.4 |
| 2018 | 96.84% | 100.4 |
| 2019 | 94.38% | 100.5 |
| 2020 | 93.44% | 100.5 |
| 2021 | 92.07% | 100.6 |
| 2022 | 89.05% | 100.6 |
