| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 21.87 | 34.46 | 13.11 |
| 2024 | 13.94 | 22.55 | 5.96 |
| 2023 | 6.22 | 14.48 | 2.03 |
| 2022 | 1.95 | 2.44 | 1.07 |
| 2021 | 1.47 | 2.04 | 1.18 |
| 2020 | 2.56 | 3.6 | 1.94 |
| 2019 | 2.09 | 2.63 | 1.57 |
| 2018 | 2.1 | 3.09 | 1.54 |
| 2017 | 3.84 | 5.36 | 2.76 |
| 2016 | 6.27 | 9.09 | 5.07 |
| 2015 | 5.08 | 10.32 | 2.67 |
| 2014 | 2.74 | 3.41 | 2.34 |
| 2013 | 2.79 | 3.15 | 2.45 |
| 2012 | 2.68 | 3.32 | 2.19 |
| 2011 | 3.47 | 4.48 | 2.25 |
| 2010 | 3.44 | 4.5 | 2.67 |
| 2009 | 3.09 | 4.38 | 1.75 |
| 2008 | 2.97 | 6.1 | 1.27 |
| 2007 | 4.99 | 7.18 | 2.74 |
| 2006 | 1.94 | 2.84 | 1.33 |
| 2005 | 1.7 | 2.27 | 1.28 |
| 2004 | 2.69 | 5.49 | 1.59 |