| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2013 | 58.55 | 99 |
| 2012 | 59.912 | 92 |
| 2011 | 58.541 | 97 |
| 2010 | 58.244 | 99 |
| 2009 | 60.372 | 92 |
| 2008 | 58.002 | 94 |
| 2007 | 54.854 | 107 |
| 2006 | 53.704 | 109 |
| 2005 | 56.426 | 98 |
| 2004 | 56.002 | 98 |
| 2003 | 55.385 | 98 |
| 2002 | 51.947 | 115 |
| 2001 | 50.593 | 114 |
| 2000 | 50.576 | 110 |
| 1999 | 51.916 | 101 |
| 1998 | 50.965 | 101 |