| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 3.16 | 3.52 | 2.84 |
| 2024 | 3.28 | 3.79 | 2.83 |
| 2023 | 4.91 | 7.35 | 3.59 |
| 2022 | 5.62 | 8.27 | 3.89 |
| 2021 | 5.84 | 11.17 | 3.41 |
| 2020 | 51.62 | 214.98 | 5.21 |
| 2019 | 14.16 | 22.31 | 8.69 |
| 2018 | 11.55 | 14.28 | 8.87 |
| 2017 | 14.37 | 16.86 | 10.72 |
| 2016 | 9.02 | 16.45 | 4.91 |
| 2015 | 6.52 | 13.53 | 3.28 |
| 2014 | 2.93 | 3.86 | 2.13 |
| 2013 | 2.49 | 3.83 | 1.64 |
| 2012 | 2.24 | 3.78 | 1.49 |
| 2011 | 4.02 | 5.7 | 2.7 |
| 2010 | 4.57 | 6.99 | 3.22 |
| 2009 | 15.02 | 50.65 | 2.48 |
| 2008 | 9.73 | 40.78 | 2.31 |
| 2007 | 4.21 | 8.19 | 1.3 |
| 2006 | 1.49 | 2.31 | 0.77 |
| 2005 | 0.69 | 0.9 | 0.41 |
| 2004 | 0.85 | 1.59 | 0.51 |