| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 20.58 | 23.82 | 16.56 |
| 2024 | 11.5 | 27.76 | 6.31 |
| 2023 | 9.85 | 15.27 | 5.16 |
| 2022 | 5.23 | 6.93 | 4.3 |
| 2021 | 4.53 | 5.82 | 3.7 |
| 2020 | 5.06 | 6.57 | 3.93 |
| 2019 | 4.97 | 6.85 | 4.23 |
| 2018 | 5.74 | 7.52 | 4.25 |
| 2017 | 7.45 | 9.59 | 5.6 |
| 2016 | 9.99 | 14.72 | 8.4 |
| 2015 | 20.89 | 38.13 | 8.92 |
| 2014 | 13.92 | 18.75 | 11.08 |
| 2013 | 10.19 | 14.37 | 7.12 |