| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2019 | 35.32 | 97.25 | 26.61 |
| 2018 | 1,713.20 | 6624.26 | 27.95 |
| 2017 | 1,738.33 | 5020.03 | 7.2 |
| 2016 | 8.99 | 33.09 | 5.8 |
| 2015 | 1,523.37 | 1523.37 | 1523.37 |
| 2014 | 689.85 | 1546.7 | 282.79 |
| 2013 | 139.25 | 148.88 | 127.26 |
| 2012 | 302.06 | 537.42 | 110 |
| 2011 | 106.69 | 118.32 | 94.85 |
| 2010 | 140.84 | 235.75 | 78.04 |
| 2009 | 155.03 | 265.53 | 46.02 |
| 2008 | 48.40 | 92.31 | 26.94 |
| 2007 | 71.23 | 99.55 | 28.19 |
| 2006 | 24.23 | 32.06 | 15.56 |
| 2005 | 19.56 | 25.64 | 14.13 |
| 2004 | 50.09 | 99.44 | 24.44 |
| 2003 | 92.41 | 140.07 | 61.73 |
| 2002 | 78.59 | 117.97 | 61.76 |
| 2001 | 94.15 | 142.85 | 53.65 |
| 2000 | 82.08 | 164.87 | 44.57 |
| 1999 | 29.04 | 40.95 | 22.98 |
| 1998 | 33.80 | 41.54 | 26.24 |