| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2026 | 5.88 | 6.53 | 5.18 |
| 2025 | 6.07 | 9.03 | 4.89 |
| 2024 | 4.63 | 8.8 | 3.05 |
| 2023 | 5.62 | 6.85 | 4.95 |
| 2022 | 5.81 | 9.27 | 4.38 |
| 2021 | 5.43 | 9.48 | 3.95 |
| 2020 | 5.34 | 8.76 | 3.21 |
| 2019 | 3.7 | 5.3 | 2.85 |
| 2018 | 4.23 | 6.24 | 2.88 |
| 2017 | 6.09 | 8.27 | 4.94 |
| 2016 | 8.26 | 10.19 | 6.29 |
| 2015 | 13.96 | 34.59 | 5.4 |
| 2014 | 5.78 | 7.8 | 4.54 |
| 2013 | 4.26 | 6.05 | 2.49 |