| Year | PToutP | Base 100 |
|---|---|---|
| 2007 | 99.57% | 100 |
| 2008 | 100% | 97.6 |
| 2009 | 94.11% | 95.2 |
| 2010 | 98.96% | 92.7 |
| 2011 | 86.47% | 90.3 |
| 2012 | 92.44% | 87.9 |
| 2013 | 98.88% | 85.5 |
| 2014 | 95.2% | 83 |
| 2015 | 92.58% | 80.6 |
| 2016 | 97.19% | 78.2 |
| 2017 | 87.99% | 75.8 |
| 2018 | 78.58% | 73.3 |
| 2019 | 67.47% | 70.9 |
| 2020 | 62.05% | 68.5 |
| 2021 | 59.55% | 66.1 |
