| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2026 | 8.58 | 9.23 | 7.48 |
| 2025 | 8.56 | 10.16 | 6.65 |
| 2024 | 5.15 | 11.7 | 3.7 |
| 2023 | 6.22 | 7.15 | 5.48 |
| 2022 | 8.91 | 10.62 | 6.93 |
| 2021 | 5.74 | 12.28 | 2.54 |
| 2020 | 3.83 | 6.2 | 2.58 |
| 2019 | 3.61 | 5.34 | 1.66 |
| 2018 | 2.43 | 3.07 | 1.67 |
| 2017 | 3.7 | 4.77 | 2.85 |
| 2016 | 7.33 | 11.28 | 4.22 |
| 2015 | 11.89 | 22.46 | 6.07 |