| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 4.08 | 5.81 | 2.12 |
| 2024 | 1.81 | 2.86 | 1.39 |
| 2023 | 2.15 | 2.55 | 1.74 |
| 2022 | 2.52 | 4.11 | 1.82 |
| 2021 | 3.42 | 5.13 | 2.49 |
| 2020 | 3.2 | 4.06 | 2.3 |
| 2019 | 2.58 | 3.7 | 1.78 |
| 2018 | 2.54 | 3.51 | 1.76 |
| 2017 | 3.93 | 4.79 | 2.81 |
| 2016 | 5.27 | 7.56 | 4.13 |
| 2015 | 8.62 | 14.62 | 4.2 |
| 2014 | 4.1 | 6.28 | 2.86 |
| 2013 | 2.59 | 3.32 | 2 |
| 2012 | 3.08 | 3.87 | 1.96 |
| 2011 | 3.99 | 5.8 | 2.84 |
| 2010 | 5.7 | 8.84 | 4.38 |