| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 8.61 | 11.29 | 5.9 |
| 2024 | 3.42 | 8.47 | 2.56 |
| 2023 | 3.47 | 4.33 | 2.95 |
| 2022 | 3.89 | 5.45 | 2.97 |
| 2021 | 4.36 | 6.33 | 2.67 |
| 2020 | 4.1 | 6.13 | 2.77 |
| 2019 | 3.6 | 4.93 | 2.91 |
| 2018 | 10.62 | 23.14 | 3.43 |
| 2017 | 17.8 | 26.18 | 13.56 |
| 2016 | 21.4 | 25.58 | 18.56 |
| 2015 | 25.47 | 56.38 | 9.17 |
| 2014 | 9.03 | 11.75 | 6.2 |
| 2013 | 5.16 | 8.1 | 3.92 |
| 2012 | 3.86 | 4.63 | 3.15 |