| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 4.35 | 6.98 | 3.99 |
| 2024 | 2.86 | 4.84 | 2.35 |
| 2023 | 3.3 | 3.71 | 2.94 |
| 2022 | 2.62 | 3.66 | 1.65 |
| 2021 | 1.94 | 2.91 | 1.44 |
| 2020 | 2.31 | 2.85 | 1.94 |
| 2019 | 3.42 | 6.04 | 2.21 |
| 2018 | 3.63 | 5.37 | 1.78 |
| 2017 | 6.72 | 13.22 | 4.58 |
| 2016 | 12.12 | 18.23 | 6.38 |
| 2015 | 11.84 | 19.39 | 6.34 |
| 2014 | 11.44 | 18.27 | 8.1 |
| 2013 | 9.72 | 12.15 | 6.11 |
| 2012 | 6.11 | 7.19 | 4.89 |
| 2011 | 4.08 | 5.35 | 3.5 |
| 2010 | 6.79 | 11.44 | 3.79 |
| 2009 | 10.2 | 12.75 | 6.2 |
| 2008 | 9.21 | 13.61 | 4.7 |
| 2007 | 12.18 | 18.66 | 7.39 |
| 2006 | 6.56 | 10.36 | 3.55 |
| 2005 | 3.32 | 4.42 | 2.18 |
| 2004 | 7.43 | 16.3 | 3.87 |