| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 18.93 | 27.05 | 12.39 |
| 2024 | 7.11 | 13.91 | 3.47 |
| 2023 | 6.81 | 8.18 | 5.39 |
| 2022 | 6.87 | 13.58 | 4.35 |
| 2021 | 4.65 | 5.74 | 3.84 |
| 2020 | 3.97 | 5.09 | 2.99 |
| 2019 | 3.71 | 5.47 | 3.08 |
| 2018 | 4.13 | 5.95 | 3.23 |
| 2017 | 7.68 | 8.91 | 4.91 |
| 2016 | 7.17 | 9.67 | 4.58 |
| 2015 | 6.54 | 9.98 | 3.26 |
| 2014 | 3.77 | 5.61 | 2.93 |
| 2013 | 2.5 | 3.74 | 1.92 |
| 2012 | 2.05 | 2.64 | 1.63 |