| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2026 | 7.45 | 8.43 | 6.66 |
| 2025 | 5.65 | 8.95 | 2.87 |
| 2024 | 2.22 | 3.89 | 1.58 |
| 2023 | 3.17 | 4.48 | 2.43 |
| 2022 | 5.04 | 6.89 | 3.54 |
| 2021 | 5.55 | 7.01 | 4.61 |
| 2020 | 7.28 | 9.72 | 5.27 |
| 2019 | 4.85 | 7.08 | 2.83 |
| 2018 | 4.35 | 6.48 | 2.9 |
| 2017 | 7.26 | 9.23 | 5.12 |
| 2016 | 10.32 | 13.79 | 7.17 |
| 2015 | 12.06 | 22.33 | 7.02 |
| 2014 | 6.2 | 9.96 | 4.01 |
| 2013 | 5.71 | 7.79 | 3.82 |