| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 1.99 | 2.93 | 1.85 |
| 2024 | 3.49 | 7.74 | 1.41 |
| 2023 | 4.38 | 7.71 | 3.22 |
| 2022 | 4.01 | 5.09 | 2.26 |
| 2021 | 50.04 | 156.27 | 2.08 |
| 2020 | 64.05 | 151.95 | 14.46 |
| 2019 | 9 | 42.09 | 2.3 |
| 2018 | 23.27 | 67.34 | 2.2 |
| 2017 | 46.63 | 63.75 | 30.97 |
| 2016 | 46.24 | 60.07 | 31.86 |
| 2015 | 31.33 | 52.26 | 16.91 |
| 2014 | 23.47 | 35.12 | 18.92 |
| 2013 | 83.92 | 234.36 | 22.86 |
| 2012 | 391.86 | 845.58 | 167.18 |
| 2011 | 353.35 | 439.12 | 195.16 |
| 2010 | 670.62 | 765.53 | 593.25 |
| 2009 | 453.78 | 721.65 | 157.85 |
| 2008 | 70.4 | 168.19 | 19.79 |
| 2007 | 12.93 | 25.79 | 4.19 |
| 2006 | 4.27 | 6.3 | 2.86 |
| 2005 | 3.07 | 4.36 | 1.79 |
| 2004 | 2.72 | 4.78 | 1.77 |