| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 4.83 | 6.04 | 3.67 |
| 2024 | 4.06 | 6.19 | 2.61 |
| 2023 | 5.41 | 10.66 | 2.95 |
| 2022 | 11.26 | 18.98 | 6.52 |
| 2021 | 10.05 | 16.17 | 6 |
| 2020 | 4.19 | 7.58 | 3.24 |
| 2019 | 4.74 | 7.44 | 2.97 |
| 2018 | 7.63 | 12.9 | 4.92 |
| 2017 | 11.79 | 15.76 | 8.21 |
| 2016 | 12.55 | 16.03 | 9.31 |
| 2015 | 13.47 | 18.63 | 4.82 |
| 2014 | 4.18 | 4.38 | 3.98 |