| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 9.64 | 14.95 | 5.07 |
| 2024 | 5.65 | 7.51 | 3.87 |
| 2023 | 6.05 | 8.65 | 4.67 |
| 2022 | 5.15 | 7.36 | 3.64 |
| 2021 | 5.41 | 7.13 | 4.24 |
| 2020 | 5.17 | 6.98 | 4.07 |
| 2019 | 5.74 | 7.41 | 4.84 |
| 2018 | 10.14 | 18.39 | 5.07 |
| 2017 | 22.01 | 28.32 | 17.15 |
| 2016 | 18.81 | 27.63 | 13.53 |
| 2015 | 12.39 | 18.81 | 8.76 |
| 2014 | 7.61 | 10.49 | 5.64 |
| 2013 | 5.93 | 6.99 | 4.74 |