| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 63.29 | 13 |
| 2015 | 63.51 | 13 |
| 2014 | 63.79 | 12 |
| 2013 | 63.73 | 13 |
| 2012 | 63.64 | 12 |
| 2011 | 63.55 | 12 |
| 2010 | 63.49 | 13 |
| 2009 | 63.63 | 14 |
| 2008 | 63.87 | 16 |
| 2007 | 64.22 | 14 |
| 2006 | 64.67 | 13 |
| 2005 | 65.21 | 12 |
| 2004 | 65.82 | 12 |
| 2003 | 66.51 | 12 |
| 2002 | 67.22 | 11 |
| 2001 | 67.84 | 11 |
| 2000 | 68.32 | 12 |
| 1999 | 68.69 | 9 |
| 1998 | 68.87 | 10 |
| 1997 | 70.28 | 9 |
| 1996 | 71.66 | 9 |
| 1995 | 72.98 | 6 |
| 1994 | 74.31 | 6 |
| 1993 | 75.65 | 4 |
| 1992 | 76.94 | 3 |
| 1991 | 78.16 | 2 |