| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2019 | 9.19 | 10.83 | 7.8 |
| 2018 | 11.74 | 16.69 | 8.64 |
| 2017 | 60.43 | 169.37 | 14.11 |
| 2016 | 3,318.40 | 7523.16 | 156.39 |
| 2015 | 130.72 | 420.19 | 34.28 |
| 2014 | 25.14 | 41.99 | 12.28 |
| 2013 | 17.45 | 21.84 | 12.82 |
| 2012 | 16.72 | 20.74 | 12.31 |
| 2011 | 23.34 | 32.55 | 13.57 |
| 2010 | 25.64 | 42.06 | 16.58 |
| 2009 | 31.72 | 50.42 | 12.72 |
| 2008 | 62.04 | 99.93 | 8.91 |
| 2007 | 46.90 | 82.21 | 23.36 |
| 2006 | 23.80 | 35.78 | 18.28 |
| 2005 | 20.80 | 29.78 | 14.71 |
| 2004 | 34.10 | 43.3 | 25.36 |
| 2003 | 39.81 | 52.25 | 27.99 |
| 2002 | 54.35 | 60.28 | 47.58 |