| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2019 | 7.76 | 14.06 | 5.75 |
| 2018 | 10.83 | 18.18 | 6.7 |
| 2017 | 17.20 | 20.09 | 15.22 |
| 2016 | 13.79 | 16.91 | 11.19 |
| 2015 | 20.09 | 29.44 | 11.51 |
| 2014 | 10.26 | 28.96 | 5.55 |
| 2013 | 10.25 | 19.35 | 6.45 |
| 2012 | 14.05 | 19.37 | 10.4 |
| 2011 | 10.23 | 12.67 | 7.56 |
| 2010 | 17.51 | 47.42 | 7.79 |
| 2009 | 32.10 | 58.04 | 9.84 |
| 2008 | 49.45 | 174.7 | 7.64 |
| 2007 | 214.24 | 364.13 | 79.7 |
| 2006 | 46.28 | 91.23 | 16.08 |
| 2005 | 33.90 | 83.86 | 16.36 |
| 2004 | 64.45 | 99.31 | 40.28 |
| 2003 | 62.83 | 121.29 | 34.33 |
| 2002 | 42.47 | 52.46 | 36.93 |
| 2001 | 54.53 | 73.51 | 39.66 |
| 2000 | 37.62 | 52.54 | 25.49 |