| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 4.33 | 5.05 | 3.44 |
| 2024 | 2.84 | 6.1 | 1.51 |
| 2023 | 4.01 | 5.02 | 3.02 |
| 2022 | 3.68 | 5.71 | 2.58 |
| 2021 | 1.53 | 3.37 | 0.87 |
| 2020 | 0.93 | 1.46 | 0.67 |
| 2019 | 0.87 | 1.49 | 0.62 |
| 2018 | 2.65 | 4.85 | 0.88 |
| 2017 | 3.78 | 4.95 | 2.53 |
| 2016 | 3.08 | 4.77 | 2.49 |
| 2015 | 2.91 | 4.33 | 1.48 |
| 2014 | 1.41 | 1.92 | 1.14 |
| 2013 | 1.99 | 2.88 | 1.4 |
| 2012 | 2.02 | 3.09 | 1.25 |
| 2011 | 3.44 | 6 | 1.98 |
| 2010 | 0 | ||
| 2009 | 16.77 | 23.01 | 12.36 |
| 2008 | 19.79 | 36.43 | 8.66 |
| 2007 | 37.58 | 106.66 | 2.06 |
| 2006 | 1.49 | 2.55 | 1.04 |
| 2005 | 1.01 | 1.3 | 0.53 |
| 2004 | 1.17 | 2.08 | 0.82 |