| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2020 | 31.86 | 35.87 | 28.36 |
| 2019 | 19.38 | 37.03 | 5.6 |
| 2018 | 12.82 | 33.42 | 5.25 |
| 2017 | 53.57 | 80.9 | 30.94 |
| 2016 | 68.76 | 84.1 | 58 |
| 2015 | 73.53 | 100.68 | 42.36 |
| 2014 | 44.59 | 82.17 | 28.82 |
| 2013 | 32.98 | 49.82 | 23.93 |
| 2012 | 29.85 | 35.91 | 24.37 |
| 2011 | 53.26 | 110.6 | 24.7 |
| 2010 | 93.12 | 137.46 | 64.34 |
| 2009 | 79.33 | 139.57 | 33.04 |
| 2008 | 47.79 | 90.77 | 22.09 |
| 2007 | 86.24 | 133.38 | 59.67 |
| 2006 | 45.92 | 83.42 | 26.28 |
| 2005 | 32.89 | 45.5 | 25.35 |
| 2004 | 55.86 | 83.4 | 28.12 |
| 2003 | 92.51 | 120.12 | 58.37 |
| 2002 | 60.46 | 67.63 | 45.8 |
| 2001 | 66.97 | 77.76 | 48.99 |