| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 15.11 | 19.24 | 12.46 |
| 2024 | 4.39 | 18.6 | 1.28 |
| 2023 | 3.52 | 4.87 | 2.15 |
| 2022 | 2.46 | 3.49 | 1.93 |
| 2021 | 2.54 | 3.07 | 2.07 |
| 2020 | 3.12 | 4.16 | 2.27 |
| 2019 | 2.38 | 3.18 | 1.92 |
| 2018 | 3.06 | 4.51 | 1.81 |
| 2017 | 5.29 | 6.51 | 4.09 |
| 2016 | 6.08 | 7.98 | 4.18 |
| 2015 | 5.6 | 12.15 | 3.32 |
| 2014 | 4.12 | 5.63 | 3.42 |
| 2013 | 3.21 | 4.12 | 2.23 |
| 2012 | 2.46 | 3.11 | 1.71 |
| 2011 | 4.71 | 7.4 | 3.21 |
| 2010 | 7.05 | 8.95 | 5.96 |