| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2024 | 7.87 | 10.43 | 5.72 |
| 2023 | 9.87 | 12.3 | 8.58 |
| 2022 | 10.28 | 14.51 | 7.61 |
| 2021 | 9.82 | 13.53 | 8.19 |
| 2020 | 11.08 | 14.36 | 9.36 |
| 2019 | 22.73 | 49.38 | 12.31 |
| 2018 | 86.01 | 222.33 | 27.87 |
| 2017 | 339.08 | 546.12 | 201.84 |
| 2016 | 431.14 | 669.2 | 238.56 |
| 2015 | 275.22 | 428.53 | 150.9 |
| 2014 | 91.93 | 204.43 | 28.76 |
| 2013 | 102.46 | 222.82 | 34.85 |
| 2012 | 264.53 | 375.43 | 158.29 |
| 2011 | 296.83 | 474.65 | 71.6 |
| 2010 | 2696.43 | 8906.47 | 81.9 |
| 2009 | 7300.6 | 9397.68 | 5480.9 |
| 2008 | 141.23 | 647.26 | 21.86 |
| 2007 | 20.89 | 37.9 | 7.78 |
| 2006 | 9.67 | 12.77 | 6.76 |
| 2005 | 6.08 | 9.45 | 2.21 |
| 2004 | 4.42 | 7.25 | 3.07 |