| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 0 | ||
| 2024 | 0 | ||
| 2023 | 0 | ||
| 2022 | 0 | ||
| 2021 | 18.84 | 40.45 | 15.3 |
| 2020 | 0.78 | 1.06 | 0.59 |
| 2019 | 1.55 | 2.64 | 0.75 |
| 2018 | 5.29 | 15.45 | 1.36 |
| 2017 | 6.59 | 15.45 | 3.6 |
| 2016 | 4.5 | 6.23 | 3.59 |
| 2015 | 5.65 | 10.02 | 1.12 |
| 2014 | 128.29 | 568.22 | 0.98 |
| 2013 | 89.11 | 452.79 | 9.08 |
| 2012 | 9.51 | 11.79 | 7.9 |
| 2011 | 63.94 | 81.5 | 55.02 |
| 2010 | 60.91 | 88.79 | 42.24 |
| 2009 | 56.54 | 86.37 | 30 |
| 2008 | 19.07 | 35.73 | 5.83 |
| 2007 | 45.6 | 81.91 | 18.07 |
| 2006 | 37.83 | 78.28 | 1.6 |
| 2005 | 6.51 | 21.31 | 1.29 |
| 2004 | 22.63 | 35.69 | 12.96 |