| Jaar | datum | Dagtotaal | Percentage |
| 2012 | 05-14 | 27.5 | 100% |
| 2013 | 05-09 | 25.3 | 92% |
| 2014 | 05-16 | 29.4 | 106.8% |
| 2015 | 05-02 | 27.5 | 99.8% |
| 2016 | 05-05 | 30.1 | 109.5% |
| 2017 | 05-06 | 28 | 101.7% |
| 2018 | 05-04 | 28.7 | 104.4% |
| 2019 | 05-15 | 29.5 | 107.2% |
| 2020 | 05-06 | 28.3 | 102.9% |
| 2021 | 05-05 | 22.3 | 80.9% |
| 2022 | 05-08 | 28.8 | 104.7% |
| 2023 | 05-03 | 28.7 | 104.4% |
| 2024 | 05-07 | 27 | 98% |
| 2025 | 05-13 | 27.4 | 99.7% |
| 2026 | 05-09 | 24.6 | 89.4% |
31 dagen