| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 5.02 | 6.46 | 3.84 |
| 2024 | 3.83 | 5.34 | 2.84 |
| 2023 | 6.52 | 9.98 | 4.04 |
| 2022 | 10.46 | 12.63 | 8.94 |
| 2021 | 8.88 | 12.71 | 5.47 |
| 2020 | 4.5 | 8.1 | 2.18 |
| 2019 | 1.59 | 2.26 | 0.85 |
| 2018 | 0.85 | 0.98 | 0.67 |
| 2017 | 1.09 | 1.46 | 0.85 |
| 2016 | 1.65 | 2.37 | 1.31 |
| 2015 | 2.56 | 4.33 | 1.56 |
| 2014 | 1.82 | 2.65 | 0.94 |
| 2013 | 0.99 | 1.18 | 0.77 |
| 2012 | 0.72 | 0.81 | 0.59 |
| 2011 | 1.12 | 1.63 | 0.63 |
| 2010 | 1.79 | 2.65 | 1.27 |
| 2009 | 1.5 | 2.34 | 0.75 |
| 2008 | 1.33 | 2.19 | 0.59 |
| 2007 | 1.88 | 2.74 | 1.13 |
| 2006 | 1.36 | 2.07 | 1.05 |
| 2005 | 1.26 | 1.61 | 0.87 |
| 2004 | 1.86 | 3.21 | 1.22 |