| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 6.13 | 6.52 | 5.57 |
| 2024 | 5.76 | 8.33 | 4.65 |
| 2023 | 7.62 | 9.49 | 5.85 |
| 2022 | 6.42 | 8.27 | 5.51 |
| 2021 | 6.35 | 7.41 | 5.73 |
| 2020 | 14.1 | 29.54 | 7.08 |
| 2019 | 126.65 | 346.19 | 10.79 |
| 2018 | 12.32 | 16.36 | 9.15 |
| 2017 | 22.78 | 33.56 | 14.39 |
| 2016 | 29.28 | 35.87 | 23.2 |
| 2015 | 22.13 | 38.05 | 13.94 |
| 2014 | 13.74 | 22.78 | 11.13 |
| 2013 | 18.93 | 24.96 | 14.44 |
| 2012 | 27.92 | 64.36 | 14.98 |
| 2011 | 44.79 | 66.88 | 23.24 |
| 2010 | 64.1 | 79.09 | 49.85 |
| 2009 | 112.88 | 286.81 | 59.79 |
| 2008 | 137.92 | 240.08 | 73.04 |
| 2007 | 430.48 | 781.53 | 123.32 |