| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2026 | 6.21 | 7.07 | 5.42 |
| 2025 | 6.22 | 7.25 | 4.66 |
| 2024 | 4.29 | 6.72 | 3.12 |
| 2023 | 5.93 | 7.91 | 4.77 |
| 2022 | 4.94 | 7.52 | 3.98 |
| 2021 | 5.46 | 6.64 | 4.43 |
| 2020 | 5.6 | 11.82 | 2.46 |
| 2019 | 2.53 | 3.07 | 1.61 |
| 2018 | 2.46 | 3.23 | 1.76 |
| 2017 | 4.52 | 6.7 | 3.03 |
| 2016 | 18.03 | 49.45 | 6.42 |
| 2015 | 60.37 | 132.63 | 28.66 |