| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 65.18 | 45 |
| 2015 | 64.79 | 45 |
| 2014 | 64.28 | 45 |
| 2013 | 64.32 | 46 |
| 2012 | 64.47 | 46 |
| 2011 | 66.12 | 40 |
| 2010 | 67.36 | 37 |
| 2009 | 68.22 | 34 |
| 2008 | 68.81 | 31 |
| 2007 | 69.16 | 29 |
| 2006 | 69.77 | 28 |
| 2005 | 69.81 | 28 |
| 2004 | 69.74 | 28 |
| 2003 | 69.43 | 29 |
| 2002 | 68.27 | 30 |
| 2001 | 66.93 | 35 |
| 2000 | 65.69 | 38 |
| 1999 | 65.21 | 40 |
| 1998 | 64.66 | 39 |
| 1997 | 62.84 | 52 |
| 1996 | 63.71 | 46 |
| 1995 | 63.54 | 45 |
| 1994 | 63.25 | 46 |
| 1993 | 62.69 | 49 |
| 1992 | 63.11 | 47 |
| 1991 | 63.55 | 47 |