| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 1.8 | 2.02 | 1.59 |
| 2024 | 1.56 | 1.94 | 1.18 |
| 2023 | 1.88 | 2.17 | 1.4 |
| 2022 | 1.96 | 2.72 | 1.29 |
| 2021 | 1.48 | 1.85 | 1.14 |
| 2020 | 2.77 | 3.61 | 1.7 |
| 2019 | 3.99 | 5.19 | 3.02 |
| 2018 | 4.46 | 6.12 | 3.09 |
| 2017 | 21.23 | 66.67 | 5.7 |
| 2016 | 15.14 | 63.44 | 11.43 |
| 2015 | 8.45 | 17.81 | 6.23 |
| 2014 | 4 | 7.38 | 2.51 |
| 2013 | 2.74 | 3.41 | 2.25 |
| 2012 | 2.62 | 3.5 | 2.15 |
| 2011 | 3.74 | 5.06 | 2.48 |