| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2015 | 68.798 | 51 |
| 2014 | 68.579 | 54 |
| 2013 | 69.106 | 53 |
| 2012 | 69.425 | 50 |
| 2011 | 62.911 | 74 |
| 2010 | 65.317 | 69 |
| 2009 | 61.366 | 88 |
| 2008 | 61.625 | 78 |
| 2007 | 65.999 | 61 |
| 2006 | 68.843 | 46 |
| 2005 | 68.791 | 44 |
| 2004 | 68.724 | 41 |
| 2003 | 68.86 | 41 |
| 2002 | 71.133 | 26 |
| 2001 | 69.664 | 33 |
| 2000 | 71.747 | 24 |