| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 10.21 | 11 | 8.99 |
| 2024 | 8.14 | 13.76 | 4.03 |
| 2023 | 10.24 | 23.4 | 4.92 |
| 2022 | 29.43 | 46.33 | 19.1 |
| 2021 | 47.66 | 87.51 | 24.16 |
| 2020 | 18.78 | 40.05 | 12.55 |
| 2019 | 15.22 | 23.67 | 10.67 |
| 2018 | 21.48 | 34.36 | 8.59 |
| 2017 | 30.27 | 50.36 | 18.51 |
| 2016 | 33.38 | 50.48 | 20.44 |
| 2015 | 19.87 | 53.14 | 3.47 |
| 2014 | 3.42 | 5.23 | 1.94 |
| 2013 | 1.41 | 2.11 | 0.95 |
| 2012 | 1.12 | 1.47 | 0.78 |
| 2011 | 2.27 | 3.54 | 0.93 |
| 2010 | 5.01 | 6.89 | 3.1 |
| 2009 | 4.85 | 7.94 | 2.17 |
| 2008 | 2.31 | 4.12 | 1.09 |