| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2019 | 19.67 | 31.98 | 11.08 |
| 2018 | 29.93 | 59.48 | 16.06 |
| 2017 | 70.38 | 89.42 | 47.35 |
| 2016 | 84.38 | 121.49 | 56.95 |
| 2015 | 3,960.29 | 21522.7 | 39.55 |
| 2014 | 44.34 | 59.22 | 31.25 |
| 2013 | 51.76 | 77.5 | 32.94 |
| 2012 | 25.33 | 35.79 | 19.26 |
| 2011 | 37.84 | 66.68 | 19.59 |
| 2010 | 74.00 | 131.39 | 47.03 |
| 2009 | 210.11 | 269.23 | 56.73 |
| 2008 | 72.33 | 144.67 | 32.07 |
| 2007 | 98.42 | 189.78 | 33.48 |
| 2006 | 27.08 | 39.52 | 17.84 |
| 2005 | 23.90 | 32.94 | 19.17 |
| 2004 | 35.47 | 47.65 | 26.61 |
| 2003 | 38.68 | 46.26 | 30.63 |
| 2002 | 61.74 | 70.84 | 53.38 |
| 2001 | 80.13 | 103.98 | 54.26 |