| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 15.3 | 19.53 | 11.72 |
| 2024 | 10.56 | 19.44 | 4.81 |
| 2023 | 5.86 | 9.84 | 3.41 |
| 2022 | 4.29 | 5.03 | 3.55 |
| 2021 | 5.07 | 7.37 | 3.91 |
| 2020 | 5.87 | 8.61 | 4.01 |
| 2019 | 4.2 | 5.42 | 2.61 |
| 2018 | 4.6 | 10.11 | 2.43 |
| 2017 | 14.29 | 16.55 | 10.11 |
| 2016 | 12.08 | 15.12 | 7.56 |
| 2015 | 5.96 | 12.55 | 3.93 |
| 2014 | 3.4 | 6.38 | 2.04 |
| 2013 | 2.04 | 2.4 | 1.73 |
| 2012 | 1.94 | 2.34 | 1.62 |