| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2019 | 18.13 | 25.82 | 14.95 |
| 2018 | 34.70 | 61.9 | 16.69 |
| 2017 | 94.70 | 161.8 | 54.57 |
| 2016 | 49.74 | 97.39 | 33.87 |
| 2015 | 45.88 | 66.9 | 31.57 |
| 2014 | 42.03 | 52.19 | 27.73 |
| 2013 | 30.18 | 40.65 | 21.1 |
| 2012 | 23.45 | 39.07 | 18.55 |
| 2011 | 41.01 | 51.43 | 31.22 |
| 2010 | 44.14 | 55.9 | 30.27 |
| 2009 | 36.99 | 50.39 | 25.63 |
| 2008 | 34.20 | 60.24 | 17.92 |
| 2007 | 45.92 | 67.29 | 32.82 |
| 2006 | 28.58 | 36.63 | 18.55 |
| 2005 | 27.16 | 43.35 | 15.59 |
| 2004 | 46.61 | 59.39 | 30.89 |
| 2003 | 64.24 | 82.93 | 38.38 |