| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 16.31 | 20.05 | 13.91 |
| 2024 | 6.03 | 20 | 2.39 |
| 2023 | 4.07 | 6.27 | 2.3 |
| 2022 | 2.84 | 5.58 | 2.39 |
| 2021 | 3.16 | 4.05 | 2.14 |
| 2020 | 4.08 | 5.78 | 2.57 |
| 2019 | 3.84 | 6.61 | 2.47 |
| 2018 | 6.5 | 8.94 | 3.72 |
| 2017 | 8.17 | 10.7 | 6.13 |
| 2016 | 5.22 | 6.94 | 4.11 |
| 2015 | 5.1 | 8.16 | 2.97 |
| 2014 | 4 | 5.58 | 3.26 |
| 2013 | 3.59 | 4.97 | 2.49 |
| 2012 | 2.52 | 3.94 | 2.08 |
| 2011 | 4.08 | 5.51 | 2.31 |
| 2010 | 4.01 | 5.04 | 3.13 |
| 2009 | 5.75 | 8.93 | 2.95 |
| 2008 | 4.2 | 10.3 | 2.16 |
| 2007 | 6.42 | 10.36 | 3.03 |
| 2006 | 2.24 | 3.08 | 1.39 |
| 2005 | 2.01 | 2.55 | 1.48 |
| 2004 | 4.61 | 9.02 | 2.05 |