| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2019 | 14.76 | 16.54 | 11.95 |
| 2018 | 18.82 | 25.85 | 11.33 |
| 2017 | 36.68 | 49.37 | 24.59 |
| 2016 | 39.33 | 48.13 | 29.52 |
| 2015 | 45.84 | 69.35 | 28.13 |
| 2014 | 50.11 | 65.86 | 41.2 |
| 2013 | 46.24 | 56.48 | 38.02 |
| 2012 | 39.86 | 51.53 | 26.23 |
| 2011 | 48.21 | 69.02 | 29 |
| 2010 | 65.07 | 108.04 | 44 |
| 2009 | 70.69 | 106.83 | 28.4 |
| 2008 | 70.24 | 205.99 | 22.02 |
| 2007 | 1,508.01 | 5206.72 | 49.55 |
| 2006 | 28.38 | 53.51 | 9.14 |
| 2005 | 12.00 | 16.97 | 8.34 |