| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2019 | 176.22 | 185.42 | 156.8 |
| 2018 | 144.39 | 215.62 | 48.03 |
| 2017 | 124.27 | 190.24 | 52.92 |
| 2016 | 189.51 | 268.73 | 124.2 |
| 2015 | 109.51 | 189.37 | 41.4 |
| 2014 | 36.13 | 54.58 | 26.11 |
| 2013 | 27.28 | 37.98 | 17.86 |
| 2012 | 20.33 | 35.78 | 14.51 |
| 2011 | 28.30 | 37.23 | 16.64 |
| 2010 | 30.60 | 45.08 | 21.54 |
| 2009 | 29.61 | 53.41 | 12.83 |
| 2008 | 30.73 | 55.7 | 10.01 |
| 2007 | 45.37 | 62.34 | 30.43 |
| 2006 | 25.53 | 33.66 | 18.63 |
| 2005 | 22.55 | 29.41 | 16.05 |