| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2019 | 29.11 | 34.5 | 23.62 |
| 2018 | 37.58 | 64.82 | 23.77 |
| 2017 | 71.35 | 136.72 | 39.53 |
| 2016 | 257.28 | 794.31 | 87.79 |
| 2015 | 209.53 | 809.54 | 74.5 |
| 2014 | 105.23 | 146.59 | 74.02 |
| 2013 | 40.96 | 105.58 | 20.03 |
| 2012 | 33.55 | 47.72 | 23.77 |
| 2011 | 48.81 | 65.95 | 30.66 |
| 2010 | 53.22 | 69.64 | 35.9 |
| 2009 | 64.85 | 117.86 | 41.11 |
| 2008 | 62.73 | 95.98 | 33.96 |
| 2007 | 89.74 | 139.53 | 39.3 |
| 2006 | 158.54 | 503.48 | 67.93 |
| 2005 | 367.47 | 1231.9 | 31.27 |
| 2004 | 51.90 | 90.53 | 31.45 |
| 2003 | 69.54 | 109.24 | 54.03 |