| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 1.94 | 2.09 | 1.81 |
| 2024 | 1.61 | 2.72 | 1.13 |
| 2023 | 1.86 | 2.71 | 1.5 |
| 2022 | 1.65 | 1.98 | 1.41 |
| 2021 | 1.92 | 2.29 | 1.75 |
| 2020 | 2.3 | 2.81 | 1.99 |
| 2019 | 3.2 | 4.49 | 2.41 |
| 2018 | 3.83 | 5.18 | 2.83 |
| 2017 | 5.97 | 6.85 | 4.89 |
| 2016 | 6.35 | 8.08 | 4.96 |
| 2015 | 10.85 | 17.45 | 6.47 |
| 2014 | 5.53 | 11.07 | 4.36 |
| 2013 | 5.29 | 9.06 | 3.77 |
| 2012 | 10.5 | 363.82 | 4.71 |
| 2011 | 0 | ||
| 2010 | 0 | ||
| 2009 | 0 | ||
| 2008 | 0 | ||
| 2007 | 5.03 | 8.54 | 2.5 |
| 2006 | 2.11 | 2.82 | 1.54 |
| 2005 | 1.17 | 1.85 | 0.49 |
| 2004 | 1.17 | 1.86 | 0.66 |