| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 61.33 | 17 |
| 2015 | 61.69 | 17 |
| 2014 | 62.22 | 16 |
| 2013 | 61.16 | 17 |
| 2012 | 61.8 | 14 |
| 2011 | 62.3 | 15 |
| 2010 | 66.25 | 11 |
| 2009 | 69.82 | 7 |
| 2008 | 72.97 | 5 |
| 2007 | 76.46 | 2 |
| 2006 | 77 | 1 |
| 2005 | 77.19 | 1 |
| 2004 | 77.78 | 1 |
| 2003 | 77.51 | 1 |
| 2002 | 76.64 | 1 |
| 2001 | 74.79 | 3 |
| 2000 | 76.96 | 2 |
| 1999 | 77.1 | 2 |
| 1998 | 76.94 | 2 |
| 1997 | 76.98 | 3 |
| 1996 | 77.48 | 2 |
| 1995 | 77.23 | 3 |
| 1994 | 76.71 | 3 |
| 1993 | 76.75 | 3 |
| 1992 | 76.71 | 4 |
| 1991 | 77.23 | 4 |