| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2026 | 18.86 | 26.34 | 15.63 |
| 2025 | 14.35 | 23.08 | 8.78 |
| 2024 | 7.19 | 14.24 | 3.77 |
| 2023 | 6.38 | 8.56 | 3.63 |
| 2022 | 3.92 | 4.6 | 2.75 |
| 2021 | 3.82 | 4.59 | 3.31 |
| 2020 | 4.4 | 6.37 | 2.88 |
| 2019 | 3.12 | 4.14 | 2.63 |
| 2018 | 3.36 | 4.34 | 2.57 |
| 2017 | 5.89 | 8.51 | 3.69 |
| 2016 | 9.28 | 12.43 | 7.29 |
| 2015 | 16.21 | 29.27 | 7.63 |
| 2014 | 9.41 | 15.11 | 6.34 |
| 2013 | 8.24 | 10.12 | 6.33 |
| 2012 | 7.36 | 11.33 | 4.7 |