| Year | PToutP | Base 100 |
|---|---|---|
| 2009 | 97.62% | 100 |
| 2010 | 98.09% | 99.8 |
| 2011 | 95.87% | 99.6 |
| 2012 | 96.99% | 99.5 |
| 2013 | 96.42% | 99.3 |
| 2014 | 100% | 99.1 |
| 2015 | 97.5% | 98.9 |
| 2016 | 97.32% | 98.8 |
| 2017 | 95.35% | 98.6 |
| 2018 | 98.47% | 98.4 |
| 2019 | 96.17% | 98.2 |
| 2020 | 92.39% | 98.1 |
| 2021 | 94.04% | 97.9 |
| 2022 | 98.16% | 97.7 |
