| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 3.98 | 5.53 | 3.53 |
| 2024 | 3.46 | 4.37 | 2.79 |
| 2023 | 4.44 | 5.24 | 3.67 |
| 2022 | 4.46 | 6.35 | 3.3 |
| 2021 | 4.82 | 6.72 | 3.79 |
| 2020 | 4.86 | 7.46 | 2.91 |
| 2019 | 3.38 | 4.38 | 2.13 |
| 2018 | 2.91 | 4.1 | 2.06 |
| 2017 | 5.55 | 7.38 | 3.69 |
| 2016 | 7.66 | 9.48 | 6.5 |
| 2015 | 9.03 | 15.65 | 4.8 |
| 2014 | 3.46 | 6.9 | 2.22 |
| 2013 | 2.49 | 3.22 | 1.92 |
| 2012 | 1.92 | 2.41 | 1.42 |
| 2011 | 4.62 | 7.34 | 1.82 |
| 2010 | 5.5 | 7.55 | 3.44 |
| 2009 | 5.03 | 6.49 | 3.34 |
| 2008 | 5.33 | 10.66 | 1.92 |
| 2007 | 6.57 | 9.84 | 2.97 |
| 2006 | 2.84 | 4.38 | 1.84 |
| 2005 | 1.63 | 1.92 | 1.14 |
| 2004 | 2.38 | 3.26 | 1.78 |
| 2003 | 3.13 | 4.03 | 2.15 |
| 2002 | 7.36 | 16.45 | 3.36 |