| Year | PToutP | Base 100 |
|---|---|---|
| 2009 | 97.07% | 100 |
| 2011 | 96.33% | 100.1 |
| 2012 | 94.96% | 100.1 |
| 2013 | 92.63% | 100.2 |
| 2014 | 89.54% | 100.2 |
| 2015 | 94.48% | 100.3 |
| 2016 | 100% | 100.3 |
| 2017 | 97.26% | 100.4 |
| 2018 | 96.91% | 100.4 |
| 2019 | 98.65% | 100.5 |
| 2020 | 96.72% | 100.5 |
| 2021 | 98.62% | 100.6 |
| 2022 | 99.82% | 100.6 |
