| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 0 | ||
| 2024 | 0 | ||
| 2023 | 0 | ||
| 2022 | 6.74 | 10.66 | 1.06 |
| 2021 | 6.06 | 8.86 | 3.53 |
| 2020 | 3.92 | 8.46 | 2.27 |
| 2019 | 5.08 | 8.84 | 3.4 |
| 2018 | 10.16 | 19.45 | 3.98 |
| 2017 | 10.58 | 14.32 | 7.62 |
| 2016 | 22.27 | 53.23 | 12.28 |
| 2015 | 226.41 | 842.23 | 31.11 |
| 2014 | 169.34 | 262.13 | 107.36 |
| 2013 | 108.57 | 156.71 | 56.97 |
| 2012 | 455.23 | 1130.21 | 94.59 |
| 2011 | 940.11 | 1434.91 | 332.54 |
| 2010 | 819.46 | 2105.45 | 352.15 |
| 2009 | 371.5 | 1796.88 | 7.71 |
| 2008 | 7.58 | 12.82 | 4.31 |
| 2007 | 9.93 | 14.05 | 4.57 |
| 2006 | 4.24 | 6.51 | 2.85 |
| 2005 | 2.97 | 4.1 | 1.91 |
| 2004 | 4.95 | 9.16 | 2.64 |