| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2020 | 18.49 | 25.05 | 11.41 |
| 2019 | 12.77 | 16.04 | 10.81 |
| 2018 | 16.86 | 25.75 | 9.89 |
| 2017 | 53.5 | 113.3 | 25.75 |
| 2016 | 153.78 | 220.86 | 101.75 |
| 2015 | 544.85 | 701.32 | 435.76 |
| 2014 | 800.41 | 4884.15 | 51.38 |
| 2013 | 118.97 | 221.8 | 49.89 |
| 2012 | 59.98 | 106.89 | 40.77 |
| 2011 | 68.94 | 94.6 | 44.28 |
| 2010 | 877.11 | 2854.59 | 56.81 |
| 2009 | 653.84 | 3076.11 | 21.06 |
| 2008 | 50.6 | 105.47 | 16.48 |
| 2007 | 77.86 | 128.38 | 45.31 |
| 2006 | 35.69 | 81.38 | 17.62 |
| 2005 | 29.1 | 42.42 | 17.07 |
| 2004 | 69.03 | 106.82 | 34.68 |
| 2003 | 65.72 | 83.74 | 55.62 |
| 2002 | 56.06 | 62.81 | 43.09 |
| 2001 | 79.45 | 103 | 62.02 |