| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2024 | 7.31 | 8.57 | 6.12 |
| 2023 | 12.81 | 19.55 | 8.3 |
| 2022 | 16.25 | 22.38 | 12.78 |
| 2021 | 39.73 | 64.6 | 22.04 |
| 2020 | 30.36 | 46.04 | 16.27 |
| 2019 | 16.05 | 20.88 | 10 |
| 2018 | 11.63 | 15.21 | 9.15 |
| 2017 | 9.03 | 12.42 | 7.24 |
| 2016 | 13.22 | 20.65 | 10.81 |
| 2015 | 23.46 | 28.92 | 13.29 |
| 2014 | 14.22 | 18.18 | 11.16 |
| 2013 | 11.03 | 14.45 | 7.91 |
| 2012 | 10.12 | 12.09 | 8.2 |
| 2011 | 12.22 | 14.69 | 10 |
| 2010 | 10.79 | 15.84 | 6.63 |
| 2009 | 8.95 | 10.82 | 6.86 |
| 2008 | 12.44 | 29.1 | 4.45 |
| 2007 | 242.34 | 1077.37 | 18.48 |
| 2006 | 200.41 | 363.06 | 96.87 |
| 2005 | 7195.87 | 18023.6 | 254.03 |