| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2024 | 7.38 | 9.32 | 4.83 |
| 2023 | 13.41 | 27.22 | 7.94 |
| 2022 | 20.09 | 29.78 | 13.32 |
| 2021 | 10.27 | 24.22 | 2.21 |
| 2020 | 3.46 | 4.6 | 2.12 |
| 2019 | 3.9 | 5.95 | 2.61 |
| 2018 | 3.66 | 4.71 | 2.66 |
| 2017 | 6.75 | 10.78 | 3.78 |
| 2016 | 8.74 | 11.97 | 7.23 |
| 2015 | 18.02 | 37.93 | 9.84 |
| 2014 | 12.56 | 17.28 | 7.94 |
| 2013 | 7.38 | 10.8 | 5.31 |
| 2012 | 11.31 | 16.99 | 6.59 |
| 2011 | 17.78 | 26.86 | 9.83 |
| 2010 | 12.78 | 19.32 | 9.84 |
| 2009 | 10.87 | 19.78 | 4.17 |
| 2008 | 6.94 | 14.24 | 2.36 |
| 2007 | 8.11 | 13.01 | 2.58 |
| 2006 | 3.08 | 4.26 | 2.29 |
| 2005 | 4.33 | 5.34 | 3.16 |
| 2004 | 6.23 | 11 | 3.57 |