| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2019 | 617.31 | 824.8 | 483.1 |
| 2018 | 795.61 | 1140.17 | 509.15 |
| 2017 | 325.66 | 337.48 | 311.98 |
| 2016 | 486.35 | 950.82 | 115.35 |
| 2015 | 89.95 | 186.44 | 47.1 |
| 2014 | 45.96 | 57.65 | 37.78 |
| 2013 | 43.75 | 55.38 | 29.54 |
| 2012 | 28.40 | 35.25 | 23.26 |
| 2011 | 47.43 | 61.13 | 35.25 |
| 2010 | 50.51 | 67.85 | 39.17 |
| 2009 | 38.53 | 48.8 | 31.89 |
| 2008 | 50.52 | 90.38 | 25.69 |
| 2007 | 61.09 | 96.72 | 33 |
| 2006 | 26.47 | 34.91 | 17.37 |
| 2005 | 21.54 | 27.71 | 16.43 |
| 2004 | 24.55 | 35.03 | 12.67 |
| 2003 | 37.57 | 56.64 | 23.17 |
| 2002 | 77.66 | 95.36 | 54.2 |
| 2001 | 81.30 | 107.39 | 56.27 |