| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 3.33 | 4.08 | 2.55 |
| 2024 | 2.22 | 3.11 | 1.43 |
| 2023 | 4.52 | 9.03 | 2.63 |
| 2022 | 3.76 | 7.48 | 2.59 |
| 2021 | 2.85 | 3.93 | 1.94 |
| 2020 | 2.17 | 2.97 | 1.14 |
| 2019 | 1.47 | 1.83 | 1.24 |
| 2018 | 1.9 | 2.67 | 1.32 |
| 2017 | 4.14 | 8.51 | 2.55 |
| 2016 | 11.02 | 31.18 | 6.42 |
| 2015 | 17.31 | 38.68 | 7.05 |
| 2014 | 5.87 | 10.06 | 2.84 |
| 2013 | 3.51 | 3.98 | 2.85 |
| 2012 | 3.32 | 4.66 | 2.63 |
| 2011 | 6.46 | 10.41 | 3.08 |
| 2010 | 7.85 | 11.68 | 5.86 |
| 2009 | 4.94 | 8.33 | 1.84 |
| 2008 | 3.33 | 6.51 | 1.27 |
| 2007 | 5.34 | 7.13 | 3.62 |
| 2006 | 2.18 | 4.2 | 1.08 |
| 2005 | 1.19 | 1.47 | 0.81 |
| 2004 | 1.69 | 2.46 | 1.3 |