| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 1.44 | 1.77 | 0.92 |
| 2024 | 1.23 | 1.85 | 0.76 |
| 2023 | 2 | 2.27 | 1.77 |
| 2022 | 2.75 | 4.03 | 1.85 |
| 2021 | 4.32 | 7.14 | 3.27 |
| 2020 | 4.85 | 7.17 | 3.46 |
| 2019 | 3.6 | 5.45 | 2.65 |
| 2018 | 4.59 | 6.1 | 3.27 |
| 2017 | 7.54 | 8.87 | 5.49 |
| 2016 | 11.71 | 21 | 8.24 |
| 2015 | 27.69 | 53.9 | 14.06 |
| 2014 | 14.3 | 17.4 | 12.21 |
| 2013 | 9.07 | 13.89 | 5.25 |
| 2012 | 4.99 | 6.04 | 4.13 |