| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2019 | 11.99 | 15.2 | 9.88 |
| 2018 | 12.76 | 17.44 | 7.85 |
| 2017 | 21.66 | 26.12 | 16.46 |
| 2016 | 26.56 | 31.94 | 22.37 |
| 2015 | 35.59 | 59.73 | 20.43 |
| 2014 | 22.98 | 29.84 | 19.82 |
| 2013 | 20.32 | 26.86 | 16.09 |
| 2012 | 16.80 | 23.23 | 10.87 |
| 2011 | 17,307.84 | 116001 | 11.73 |
| 2010 | 45,828.00 | 112983 | 30929.2 |
| 2009 | 134.27 | 171.79 | 93.21 |
| 2008 | 86.46 | 150.64 | 49.62 |
| 2007 | 99.35 | 232.38 | 35.03 |
| 2006 | 38.28 | 56.02 | 29.67 |
| 2005 | 42.04 | 55.18 | 26.2 |
| 2004 | 110.04 | 161.86 | 51.94 |
| 2003 | 139.85 | 175.73 | 122.3 |