| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 59.44 | 56 |
| 2015 | 59.25 | 56 |
| 2014 | 59.06 | 56 |
| 2013 | 58.81 | 56 |
| 2012 | 58.74 | 60 |
| 2011 | 58.67 | 58 |
| 2010 | 58.58 | 58 |
| 2009 | 58.57 | 60 |
| 2008 | 58.55 | 61 |
| 2007 | 59.58 | 55 |
| 2006 | 60.68 | 49 |
| 2005 | 61.82 | 43 |
| 2004 | 62.99 | 42 |
| 2003 | 64.19 | 38 |
| 2002 | 65.4 | 34 |
| 2001 | 66.62 | 30 |
| 2000 | 67.83 | 30 |
| 1999 | 68.97 | 29 |
| 1998 | 68.88 | 29 |
| 1997 | 68.84 | 27 |
| 1996 | 68.86 | 28 |
| 1995 | 68.87 | 28 |
| 1994 | 68.67 | 28 |
| 1993 | 68.55 | 28 |
| 1992 | 68.35 | 30 |
| 1991 | 68.33 | 28 |
| 1990 | 68.24 | 28 |