| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 8.26 | 13.81 | 4.71 |
| 2024 | 4.32 | 8.3 | 2.42 |
| 2023 | 3.74 | 7.35 | 2.69 |
| 2022 | 3.29 | 4.87 | 2.25 |
| 2021 | 5.15 | 8.88 | 3.49 |
| 2020 | 10.41 | 15.24 | 7.41 |
| 2019 | 10.8 | 17.05 | 6.74 |
| 2018 | 6.33 | 7.97 | 5.03 |
| 2017 | 10.51 | 12.78 | 7.47 |
| 2016 | 13.48 | 19.43 | 8.79 |
| 2015 | 9.16 | 17.01 | 7.04 |
| 2014 | 7.3 | 10.85 | 5.08 |
| 2013 | 4.87 | 7.04 | 3.66 |