| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2019 | 1,435.79 | 1730.02 | 1132.32 |
| 2018 | 490.87 | 1340.69 | 175.95 |
| 2017 | 142.43 | 259.57 | 62.9 |
| 2016 | 165.43 | 375.11 | 69.2 |
| 2015 | 377.92 | 1525.34 | 73.8 |
| 2014 | 79.42 | 116.6 | 41.61 |
| 2013 | 55.73 | 124.32 | 39.28 |
| 2012 | 444.43 | 490.94 | 366.92 |
| 2011 | 145.56 | 629.74 | 40.8 |
| 2010 | 55.17 | 87.55 | 37.84 |
| 2009 | 66.15 | 298.46 | 31.1 |
| 2008 | 1,306.74 | 1980.37 | 374.93 |
| 2007 | 1,451.31 | 9062.78 | 79.3 |
| 2006 | 93.67 | 133.45 | 70.62 |
| 2005 | 63.09 | 100.29 | 36.09 |