| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 67.27 | 24 |
| 2015 | 67.32 | 24 |
| 2014 | 67.46 | 23 |
| 2013 | 67.35 | 23 |
| 2012 | 67.26 | 22 |
| 2011 | 67.14 | 22 |
| 2010 | 67.03 | 22 |
| 2009 | 66.87 | 21 |
| 2008 | 66.47 | 22 |
| 2007 | 66.06 | 22 |
| 2006 | 64.81 | 22 |
| 2005 | 63.57 | 29 |
| 2004 | 62.36 | 29 |
| 2003 | 61.07 | 31 |
| 2002 | 60.53 | 33 |
| 2001 | 58.72 | 35 |
| 2000 | 58.9 | 35 |
| 1999 | 58.53 | 35 |
| 1998 | 56.44 | 37 |
| 1997 | 55.83 | 39 |
| 1996 | 55.22 | 37 |
| 1995 | 57.18 | 36 |
| 1994 | 55.5 | 40 |
| 1993 | 54.6 | 42 |
| 1992 | 53.68 | 46 |
| 1991 | 52.73 | 47 |