| Year | PToutP | Base 100 |
|---|---|---|
| 2009 | 91.02% | 100 |
| 2010 | 90.29% | 100.7 |
| 2011 | 95.43% | 101.4 |
| 2012 | 95.54% | 102.1 |
| 2013 | 93.67% | 102.7 |
| 2014 | 95.02% | 103.4 |
| 2015 | 95.44% | 104.1 |
| 2016 | 91.92% | 104.8 |
| 2017 | 95.21% | 105.5 |
| 2018 | 97.18% | 106.2 |
| 2019 | 99.14% | 106.8 |
| 2020 | 98.33% | 107.5 |
| 2021 | 100% | 108.2 |
