| Year | PToutP | Base 100 |
|---|---|---|
| 2009 | 89.28% | 100 |
| 2010 | 87.01% | 100.8 |
| 2011 | 97.08% | 101.6 |
| 2012 | 96.83% | 102.4 |
| 2013 | 87.17% | 103.2 |
| 2014 | 98.96% | 103.9 |
| 2015 | 98.17% | 104.7 |
| 2016 | 99.31% | 105.5 |
| 2017 | 94.57% | 106.3 |
| 2018 | 97.02% | 107.1 |
| 2019 | 98.45% | 107.9 |
| 2020 | 100% | 108.7 |
| 2021 | 96.73% | 109.5 |
