| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 0 | ||
| 2024 | 2.37 | 3.46 | 1.17 |
| 2023 | 3.44 | 4.78 | 2.74 |
| 2022 | 2.97 | 3.4 | 2.45 |
| 2021 | 3.12 | 4.08 | 2.68 |
| 2020 | 3.25 | 4.34 | 2.52 |
| 2019 | 3.48 | 7.71 | 2.06 |
| 2018 | 5.91 | 9.93 | 3.8 |
| 2017 | 13.21 | 22.91 | 9.93 |
| 2016 | 61.39 | 327.89 | 20.07 |
| 2015 | 129.2 | 246.39 | 38.24 |
| 2014 | 22.4 | 45.92 | 9.02 |
| 2013 | 8.27 | 11.08 | 4.56 |
| 2012 | 4.18 | 5.23 | 3.12 |
| 2011 | 6.53 | 9.93 | 3.17 |
| 2010 | 11.12 | 17.68 | 6.91 |
| 2009 | 11.15 | 16.19 | 6.5 |
| 2008 | 6.58 | 13.45 | 3.97 |
| 2007 | 7.65 | 12.63 | 1.91 |
| 2006 | 1.58 | 2.05 | 1.19 |
| 2005 | 1.74 | 2.54 | 1.22 |
| 2004 | 2.83 | 4.68 | 1.72 |