| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2024 | 10.95 | 12.67 | 8.4 |
| 2023 | 5.91 | 15.52 | 3.09 |
| 2022 | 3.32 | 4.13 | 2.58 |
| 2021 | 2.95 | 3.89 | 2.06 |
| 2020 | 2.8 | 3.57 | 2.29 |
| 2019 | 3.42 | 5.9 | 2.5 |
| 2018 | 6.99 | 10.61 | 3.28 |
| 2017 | 18.8 | 33.55 | 10.41 |
| 2016 | 49.83 | 84.29 | 29.37 |
| 2015 | 25.88 | 52.81 | 14.59 |
| 2014 | 16.94 | 21.56 | 13.9 |
| 2013 | 19.3 | 26.57 | 14.61 |
| 2012 | 13.38 | 17.65 | 10.62 |
| 2011 | 19.91 | 24.89 | 11.55 |
| 2010 | 21.4 | 26.11 | 15.62 |
| 2009 | 16.65 | 26.45 | 8.91 |
| 2008 | 14.35 | 24.06 | 7.08 |
| 2007 | 18.28 | 29.43 | 7.53 |
| 2006 | 7.47 | 9.33 | 5.34 |
| 2005 | 5.83 | 8.48 | 2.7 |
| 2004 | 5.66 | 12.6 | 2.84 |