| Year | PToutP | Base 100 |
|---|---|---|
| 2009 | 96.96% | 100 |
| 2011 | 93.53% | 100.1 |
| 2012 | 96.56% | 100.1 |
| 2013 | 96.87% | 100.2 |
| 2014 | 96.23% | 100.2 |
| 2015 | 97.52% | 100.3 |
| 2016 | 97.79% | 100.3 |
| 2017 | 99.98% | 100.4 |
| 2018 | 97.14% | 100.4 |
| 2019 | 98.52% | 100.5 |
| 2020 | 100% | 100.5 |
| 2021 | 99.42% | 100.6 |
| 2022 | 98.95% | 100.6 |
