| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 16.1 | 26.08 | 11.56 |
| 2024 | 7.52 | 22.46 | 2.8 |
| 2023 | 3.96 | 6.76 | 2.65 |
| 2022 | 2.69 | 3.22 | 1.69 |
| 2021 | 2.56 | 3.44 | 2.02 |
| 2020 | 3.41 | 4.28 | 2.01 |
| 2019 | 3.35 | 4.5 | 2.16 |
| 2018 | 2.99 | 4.47 | 1.82 |
| 2017 | 4.35 | 5.5 | 3.52 |
| 2016 | 5.82 | 8.85 | 5.04 |
| 2015 | 10.36 | 20.49 | 3.95 |
| 2014 | 6.49 | 10.11 | 4.21 |
| 2013 | 4.73 | 6.59 | 3.27 |
| 2012 | 3.3 | 3.62 | 3.06 |