| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 10.66 | 12.55 | 7.96 |
| 2024 | 12.44 | 19.39 | 8.16 |
| 2023 | 15.1 | 20.19 | 12.21 |
| 2022 | 10.74 | 13.46 | 8.79 |
| 2021 | 8.28 | 12.72 | 5.32 |
| 2020 | 8.45 | 16.79 | 5.08 |
| 2019 | 14.97 | 17.87 | 10.96 |
| 2018 | 15.95 | 19.45 | 13.82 |
| 2017 | 31.02 | 68.26 | 13.78 |
| 2016 | 337.56 | 1173.97 | 59.95 |
| 2015 | 189.93 | 651.41 | 8.4 |
| 2014 | 3.46 | 8.91 | 1.07 |
| 2013 | 1.24 | 1.58 | 0.98 |
| 2012 | 1.12 | 2.38 | 0.83 |
| 2011 | 4.18 | 5.55 | 1.71 |
| 2010 | 8.13 | 14.57 | 4.64 |
| 2009 | 6.93 | 9.98 | 2.73 |
| 2008 | 4.01 | 7.61 | 1.61 |
| 2007 | 6.65 | 9.43 | 3.13 |
| 2006 | 3.91 | 5.65 | 2.26 |
| 2005 | 1.21 | 2.78 | 0.57 |
| 2004 | 3.5 | 5.75 | 0.84 |