| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2026 | 3.81 | 4.26 | 3.17 |
| 2025 | 4.66 | 6.02 | 3.97 |
| 2024 | 5.68 | 7.68 | 3.9 |
| 2023 | 8.75 | 11.89 | 5.79 |
| 2022 | 8.56 | 10.9 | 6.7 |
| 2021 | 11.69 | 16.84 | 8.7 |
| 2020 | 10.75 | 15.04 | 6.68 |
| 2019 | 7.91 | 9.95 | 4.62 |
| 2018 | 6.81 | 9.15 | 4.78 |
| 2017 | 6.48 | 7.75 | 5.42 |
| 2016 | 6.54 | 8.26 | 5.1 |
| 2015 | 7.07 | 10.29 | 5 |