| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 11.68 | 13.81 | 9.39 |
| 2024 | 6.57 | 14.65 | 4.58 |
| 2023 | 3.68 | 6.12 | 2.14 |
| 2022 | 2.36 | 3.43 | 1.37 |
| 2021 | 1.43 | 2.29 | 1.01 |
| 2020 | 1.67 | 2.27 | 1.28 |
| 2019 | 2.27 | 3.2 | 1.32 |
| 2018 | 2.15 | 3.71 | 1.27 |
| 2017 | 6.07 | 9.94 | 3.31 |
| 2016 | 8.68 | 10.67 | 6.09 |
| 2015 | 11.01 | 15.01 | 6.85 |
| 2014 | 6.18 | 8.54 | 4.35 |
| 2013 | 4.96 | 9.46 | 2.91 |
| 2012 | 3.52 | 5.23 | 2.27 |
| 2011 | 8.43 | 13.18 | 4.3 |
| 2010 | 15.27 | 23.28 | 9.87 |