| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 3.97 | 6.02 | 2.5 |
| 2024 | 2.61 | 3.58 | 1.79 |
| 2023 | 3.2 | 4.79 | 2.54 |
| 2022 | 3.5 | 4.83 | 2.74 |
| 2021 | 6.65 | 10.15 | 4.25 |
| 2020 | 11.48 | 19.49 | 7.96 |
| 2019 | 8.59 | 11.83 | 6.87 |
| 2018 | 13.14 | 22.62 | 6.59 |
| 2017 | 44.41 | 114.81 | 21.02 |
| 2016 | 15.83 | 29.13 | 13.39 |
| 2015 | 13.54 | 28.98 | 5.69 |
| 2014 | 5.87 | 7.65 | 4.01 |
| 2013 | 4.13 | 5.1 | 3.41 |
| 2012 | 3.88 | 4.75 | 2.78 |
| 2011 | 3.94 | 5.82 | 2.63 |
| 2010 | 4.65 | 7.72 | 2.8 |
| 2009 | 4.56 | 6.19 | 2.8 |
| 2008 | 5.33 | 12.3 | 1.63 |
| 2007 | 8.17 | 13.72 | 3.11 |
| 2006 | 3.59 | 5.65 | 2.41 |
| 2005 | 2.74 | 3.91 | 2.02 |
| 2004 | 4.89 | 10.8 | 2.45 |