| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 2.4 | 2.94 | 1.92 |
| 2024 | 2.04 | 3.27 | 1.19 |
| 2023 | 3.97 | 4.93 | 2.84 |
| 2022 | 3.36 | 4.65 | 2.63 |
| 2021 | 3.6 | 5.45 | 2.84 |
| 2020 | 4.65 | 6.78 | 3.12 |
| 2019 | 5.64 | 8.26 | 4.46 |
| 2018 | 6.37 | 10.94 | 3.96 |
| 2017 | 13.05 | 17.83 | 8.75 |
| 2016 | 19.91 | 25.27 | 14.46 |
| 2015 | 31.53 | 42.39 | 11.44 |
| 2014 | 14.83 | 20.86 | 9.93 |
| 2013 | 10.62 | 18.37 | 5.46 |
| 2012 | 5.54 | 7.83 | 4.21 |
| 2011 | 7.93 | 16.69 | 6.4 |