| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 12.51 | 19.09 | 9.36 |
| 2024 | 9.23 | 14.65 | 7.15 |
| 2023 | 8.49 | 14.05 | 3.56 |
| 2022 | 5.52 | 8.31 | 4.02 |
| 2021 | 5.64 | 8.24 | 4.39 |
| 2020 | 2.77 | 8.72 | 0.69 |
| 2019 | 0.74 | 1.02 | 0.55 |
| 2018 | 1.04 | 1.45 | 0.55 |
| 2017 | 1.6 | 2.1 | 1.24 |
| 2016 | 3.18 | 5.66 | 1.95 |
| 2015 | 7.19 | 16.99 | 1.52 |
| 2014 | 2.41 | 2.9 | 1.9 |
| 2013 | 2.29 | 2.94 | 1.95 |
| 2012 | 2.74 | 3.34 | 1.94 |
| 2011 | 3.84 | 4.73 | 2.89 |
| 2010 | 65.1 | 315.04 | 1.92 |
| 2009 | 1.62 | 2.2 | 0.9 |
| 2008 | 1.99 | 4.64 | 0.66 |
| 2007 | 2.81 | 4.09 | 1.57 |
| 2006 | 1.08 | 1.45 | 0.81 |
| 2005 | 1.29 | 1.9 | 0.9 |
| 2004 | 1.96 | 3.56 | 1.27 |