| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 5.32 | 8.69 | 3.14 |
| 2024 | 3.07 | 4.5 | 2.01 |
| 2023 | 4.25 | 5.21 | 3.56 |
| 2022 | 4.39 | 6.08 | 3.16 |
| 2021 | 3.62 | 7.66 | 2.49 |
| 2020 | 3.23 | 4.74 | 2.11 |
| 2019 | 3.47 | 6.06 | 2.52 |
| 2018 | 4.27 | 5.76 | 3.16 |
| 2017 | 6.56 | 7.52 | 5.26 |
| 2016 | 8.28 | 14.05 | 5.6 |
| 2015 | 10.42 | 16.03 | 5.51 |
| 2014 | 5.11 | 7.7 | 2.42 |
| 2013 | 1.95 | 3.08 | 1.42 |
| 2012 | 1.85 | 2.39 | 1.29 |
| 2011 | 3.03 | 3.53 | 2.19 |