| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 2.87 | 3.87 | 2.43 |
| 2024 | 3.34 | 5.21 | 2.29 |
| 2023 | 14.5 | 61.81 | 3.44 |
| 2022 | 12.12 | 21.18 | 2.62 |
| 2021 | 2.47 | 4.7 | 1.79 |
| 2020 | 2.13 | 2.64 | 1.91 |
| 2019 | 6.04 | 13.31 | 2.39 |
| 2018 | 6.86 | 11.5 | 3.98 |
| 2017 | 30.81 | 42.69 | 7.05 |
| 2016 | 34.32 | 56.7 | 11.09 |
| 2015 | 7.01 | 16.96 | 2.48 |
| 2014 | 2.39 | 3.32 | 1.64 |
| 2013 | 2.11 | 2.69 | 1.43 |
| 2012 | 1.04 | 1.73 | 0.7 |
| 2011 | 1.46 | 1.86 | 0.75 |
| 2010 | 1.31 | 1.77 | 0.82 |
| 2009 | 1.08 | 1.88 | 0.52 |
| 2008 | 0.98 | 2.05 | 0.32 |
| 2007 | 1.53 | 2.99 | 0.63 |
| 2006 | 0.74 | 0.92 | 0.6 |
| 2005 | 1.18 | 1.84 | 0.69 |
| 2004 | 1.44 | 2.26 | 1.11 |