| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2019 | 0.00 | -1.93 | |
| 2018 | 96.76 | 116.85 | 75.55 |
| 2017 | 58.29 | 140.82 | 30.72 |
| 2016 | 55.93 | 92.34 | 45.58 |
| 2015 | 149.84 | 308.86 | 65.15 |
| 2014 | 114.49 | 163.74 | 85.01 |
| 2013 | 89.87 | 206.99 | 48.6 |
| 2012 | 85.09 | 129.83 | 51.62 |
| 2011 | 126.01 | 224.13 | 63.32 |
| 2010 | 183.27 | 295.84 | 99.31 |
| 2009 | 1,389.82 | 2762.24 | 222.29 |
| 2008 | 310.61 | 721.14 | 122.43 |
| 2007 | 185.69 | 283.72 | 72.13 |
| 2006 | 65.37 | 87.28 | 46.84 |
| 2005 | 43.70 | 66.33 | 29.36 |
| 2004 | 56.62 | 90.99 | 33.33 |
| 2003 | 102.87 | 123.63 | 63.58 |
| 2002 | 114.46 | 128.53 | 94.55 |
| 2001 | 118.52 | 137.88 | 102.72 |
| 2000 | 154.89 | 195.46 | 136.65 |
| 1999 | 177.77 | 337.24 | 88.66 |