| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2018 | 27.22 | 36.32 | 18.5 |
| 2017 | 24.43 | 29.49 | 20.45 |
| 2016 | 22.86 | 29.92 | 16.4 |
| 2015 | 27.96 | 37.74 | 21.36 |
| 2014 | 33.65 | 41.44 | 28.05 |
| 2013 | 3.90 | 37.09 | 2.26 |
| 2012 | 0.00 | -21.94 | |
| 2011 | 182.58 | 224.23 | 111.5 |
| 2010 | 145.87 | 192.11 | 111.08 |
| 2009 | 109.68 | 148.36 | 65.49 |
| 2008 | 88.26 | 164.03 | 45.67 |
| 2007 | 79.80 | 117.35 | 45.53 |