| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 61.43 | 71 |
| 2015 | 54.52 | 96 |
| 2014 | 70.3 | 70 |
| 2013 | 76.76 | 66 |
| 2012 | 70.45 | 80 |
| 2011 | 67.62 | 87 |
| 2010 | 61.58 | 90 |
| 2009 | 51.43 | 112 |
| 2008 | 70.72 | 83 |
| 2007 | 64.81 | 91 |
| 2006 | 66.19 | 87 |
| 2005 | 61.35 | 91 |
| 2004 | 64.55 | 81 |
| 2003 | 60.45 | 77 |
| 2002 | 71.59 | 62 |
| 2001 | 72.77 | 58 |
| 2000 | 90.57 | 37 |
| 1999 | 98.14 | 22 |
| 1998 | 63.34 | 68 |