| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 8.62 | 11.53 | 4.82 |
| 2024 | 7.93 | 16.02 | 5.65 |
| 2023 | 8.59 | 10 | 7.45 |
| 2022 | 8.55 | 14.48 | 6 |
| 2021 | 4.76 | 14.66 | 2.16 |
| 2020 | 3.96 | 5.51 | 2.79 |
| 2019 | 3.85 | 5.24 | 2.88 |
| 2018 | 4.05 | 6.05 | 2.67 |
| 2017 | 5.72 | 7.26 | 3.8 |
| 2016 | 5.92 | 7.78 | 4.6 |
| 2015 | 8.01 | 13.54 | 5.45 |
| 2014 | 7.56 | 9.36 | 5.35 |
| 2013 | 5.42 | 13.89 | 1.48 |
| 2012 | 1.76 | 2.3 | 1.26 |
| 2011 | 2.19 | 3.07 | 1.78 |