| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2018 | 248.56 | 516.16 | 64.12 |
| 2017 | 393.50 | 585.74 | 312.1 |
| 2016 | 644.25 | 1074.48 | 524.17 |
| 2015 | 40.72 | 64.35 | 26.56 |
| 2014 | 18.26 | 26.35 | 15.86 |
| 2013 | 21.04 | 23.7 | 18.72 |
| 2012 | 35.89 | 47.98 | 28.28 |
| 2011 | 81.50 | 93.36 | 67.24 |
| 2010 | 98.49 | 132.95 | 85.12 |
| 2009 | 42.74 | 55 | 31.49 |
| 2008 | 8.20 | 14.04 | 4.39 |
| 2007 | 26.59 | 46.25 | 16.9 |