| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 4.58 | 5.34 | 3.93 |
| 2024 | 3.24 | 5.82 | 2.14 |
| 2023 | 3.78 | 4.87 | 3.02 |
| 2022 | 5.31 | 9.03 | 3.2 |
| 2021 | 9.02 | 13.96 | 7.27 |
| 2020 | 7.34 | 11.13 | 4.38 |
| 2019 | 5.1 | 7.39 | 3.86 |
| 2018 | 4.43 | 5.3 | 3.44 |
| 2017 | 4.26 | 5.02 | 3.43 |
| 2016 | 10.26 | 25.97 | 4.76 |
| 2015 | 37.15 | 85.54 | 17.51 |
| 2014 | 9.73 | 24.17 | 5.67 |
| 2013 | 5.24 | 10.05 | 1.79 |
| 2012 | 2.28 | 3.08 | 1.46 |
| 2011 | 2.9 | 3.34 | 2.32 |