| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 19.12 | 23.73 | 14.69 |
| 2024 | 11.35 | 31.26 | 7.28 |
| 2023 | 15.46 | 19.05 | 12.99 |
| 2022 | 16.12 | 21.85 | 11.57 |
| 2021 | 7.03 | 13.7 | 3.67 |
| 2020 | 5.84 | 8.84 | 3.56 |
| 2019 | 14.08 | 54.61 | 4.38 |
| 2018 | 13.24 | 26.12 | 5.94 |
| 2017 | 16.18 | 23.46 | 9.06 |
| 2016 | 29.63 | 48.1 | 20.86 |
| 2015 | 39.94 | 80.92 | 16.59 |
| 2014 | 12.84 | 21.46 | 7.59 |
| 2013 | 6.38 | 10.47 | 3.99 |
| 2012 | 4.94 | 6.32 | 3.53 |
| 2011 | 8.17 | 11.14 | 5.4 |
| 2010 | 10.96 | 14.62 | 8.48 |
| 2009 | 6.98 | 11.68 | 3.53 |
| 2008 | 4.84 | 8.58 | 2.32 |