| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2020 | 14.19 | 14.81 | 13.5 |
| 2019 | 15.83 | 25.03 | 12.32 |
| 2018 | 15.25 | 19.58 | 10.85 |
| 2017 | 21.65 | 31.93 | 15.58 |
| 2016 | 21.75 | 33.74 | 9.02 |
| 2015 | 18.14 | 27.11 | 9.36 |
| 2014 | 13.98 | 17.38 | 8.29 |
| 2013 | 11.87 | 15.83 | 9.27 |
| 2012 | 15.51 | 36.6 | 7.21 |
| 2011 | 33.35 | 37.54 | 26.34 |
| 2010 | 0 | -25.32 | |
| 2009 | 173.23 | 378.08 | 10.51 |
| 2008 | 55.24 | 353.22 | 8.09 |
| 2007 | 604.21 | 1476.61 | 201.82 |
| 2006 | 144.52 | 246.8 | 64.03 |
| 2005 | 94.09 | 134.61 | 59.08 |
| 2004 | 0 | -22.52 | |
| 2003 | 0 | -21.31 | |
| 2002 | 728.04 | 807.19 | 622.6 |