| Years | January | February | March | April | May | June | July | August | September | October | November | December | Tot. years |
| 2012 | 25.9 | 26.1 | 27.4 | 25.8 | 25.8 | 0 | 22.1 | 22.1 | 25.1 | 25.2 | 255.2 | 25.3 | 25.2 |
| 2013 | 26.1 | 26.4 | 26.7 | 26.6 | 25.8 | 0 | 22.4 | 22.4 | 23 | 25.5 | 25.5 | 25 | 25.1 |
| 2024 | 25.4 | 26.3 | 26 | 26.4 | 26 | 0 | 21.6 | 21.6 | 23.4 | 25.2 | 25.2 | 25.5 | 25 |
| 2015 | 25.5 | 25.9 | 25.8 | 26.1 | 25.8 | 0 | 23.7 | 22.8 | 23.0 | 25.7 | 25.0 | 25.5 | 24.9 |
| 2016 | 25.9 | 26.1 | 26.6 | 25.9 | 25.4 | 2.8 | 23.4 | 22.3 | 23.5 | 25.0 | 25.4 | 25.5 | 25.0 |
| 2017 | 24.6 | 26.0 | 26.6 | 26.4 | 25.5 | 21.2 | 23.4 | 22.2 | 23.0 | 24.8 | 25.0 | 24.8 | 24.7 |
| 2018 | 25.9 | 26.5 | 26.0 | 26.7 | 25.0 | 5.9 | 24.2 | 23.0 | 24.4 | 26.2 | 26.0 | 25.0 | 25.3 |
| 2019 | 25.9 | 26.3 | 27.4 | 26.7 | 25.7 | 0.0 | 23.9 | 22.0 | 23.0 | 25.2 | 25.0 | 25.5 | 25.0 |
| 2020 | 25.1 | 26.3 | 26.8 | 26.9 | 26.2 | 0.0 | 23.3 | 22.8 | 23.6 | 24.4 | 25.4 | 26.3 | 25.1 |