| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2019 | 78.29 | 100.08 | 58.26 |
| 2018 | 97.26 | 137.04 | 66.34 |
| 2017 | 417.98 | 805.62 | 116.8 |
| 2016 | 331.62 | 850.31 | 73.83 |
| 2015 | 99.58 | 146.12 | 67.62 |
| 2014 | 51.91 | 100.15 | 29.91 |
| 2013 | 72.52 | 130.61 | 34.42 |
| 2012 | 26.49 | 45.46 | 13.18 |
| 2011 | 59.07 | 116.46 | 13.17 |
| 2010 | 107.65 | 158.99 | 75.51 |
| 2009 | 30.62 | 41.22 | 15.06 |
| 2008 | 40.50 | 92.73 | 11.52 |
| 2007 | 115.07 | 230.04 | 62.09 |
| 2006 | 147.26 | 247.24 | 90.45 |
| 2005 | 92.51 | 126.99 | 65.43 |
| 2004 | 75.67 | 96.12 | 59.79 |
| 2003 | 59.14 | 65.08 | 50.06 |
| 2002 | 65.11 | 76.31 | 46.04 |
| 2001 | 60.05 | 80.54 | 44.78 |
| 2000 | 72.97 | 95.41 | 56.16 |
| 1999 | 49.54 | 70.49 | 31.22 |
| 1998 | 35.31 | 49.02 | 28.3 |