| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2020 | 6.13 | 6.37 | 5.97 |
| 2019 | 7.33 | 9.93 | 5.9 |
| 2018 | 9.41 | 16.72 | 6 |
| 2017 | 13.27 | 20.21 | 11.03 |
| 2016 | 14.38 | 17.02 | 12.39 |
| 2015 | 18.65 | 25.16 | 13.58 |
| 2014 | 11.94 | 17.38 | 8.85 |
| 2013 | 12.78 | 14.98 | 10.05 |
| 2012 | 10.11 | 14.7 | 5.54 |
| 2011 | 2200.26 | 16056.8 | 7.55 |
| 2010 | 104.43 | 181.96 | 55.03 |
| 2009 | 0 | -12.33 | |
| 2008 | 0 | -8.04 | |
| 2007 | 241.45 | 356.58 | 165.01 |
| 2006 | 0 | -17.03 | |
| 2005 | 55.59 | 76.21 | 28.07 |
| 2004 | 38.93 | 48.85 | 27.94 |