| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 15 | 16.35 | 12.64 |
| 2024 | 11.92 | 22.04 | 5.29 |
| 2023 | 15.65 | 24.8 | 6.5 |
| 2022 | 6.51 | 7.88 | 4.05 |
| 2021 | 9.99 | 17.71 | 5.12 |
| 2020 | 14.33 | 23.93 | 6.76 |
| 2019 | 13.15 | 20.84 | 9.93 |
| 2018 | 19.54 | 28.81 | 15.33 |
| 2017 | 21.32 | 28.65 | 13.26 |
| 2016 | 17.08 | 23.69 | 10.17 |
| 2015 | 13.32 | 26.04 | 6.77 |
| 2014 | 8.54 | 12.03 | 6.96 |
| 2013 | 7.6 | 9.99 | 3.55 |