| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2019 | 15.00 | 17.96 | 13.01 |
| 2018 | 38.83 | 97.87 | 14.21 |
| 2017 | 166.95 | 354.15 | 74.05 |
| 2016 | 178.38 | 361.53 | 49.65 |
| 2015 | 51.51 | 91.11 | 25.18 |
| 2014 | 37.95 | 62.84 | 23.88 |
| 2013 | 61.71 | 84.78 | 34.58 |
| 2012 | 49.59 | 59.15 | 36.48 |
| 2011 | 56.43 | 79.9 | 37.43 |
| 2010 | 63.93 | 91.73 | 47.2 |
| 2009 | 31.50 | 47.08 | 17.97 |
| 2008 | 27.82 | 65.1 | 9 |
| 2007 | 57.29 | 103.25 | 25.8 |
| 2006 | 22.86 | 30.85 | 16.95 |
| 2005 | 16.42 | 20.7 | 13.56 |
| 2004 | 22.21 | 27.81 | 16.15 |
| 2003 | 26.96 | 31.46 | 21.5 |
| 2002 | 35.10 | 46.71 | 25.06 |
| 2001 | 44.41 | 71.28 | 26.01 |