| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 65.93 | 36 |
| 2015 | 66.16 | 34 |
| 2014 | 66.27 | 34 |
| 2013 | 65.99 | 34 |
| 2012 | 65.54 | 36 |
| 2011 | 66.23 | 34 |
| 2010 | 65.48 | 36 |
| 2009 | 65.54 | 34 |
| 2008 | 64.64 | 40 |
| 2007 | 63.67 | 42 |
| 2006 | 60.5 | 50 |
| 2005 | 58.99 | 56 |
| 2004 | 56.96 | 62 |
| 2003 | 55.41 | 69 |
| 2002 | 56.97 | 62 |
| 2001 | 57.55 | 60 |
| 2000 | 55.71 | 66 |
| 1999 | 55.51 | 66 |
| 1998 | 55.32 | 65 |
| 1997 | 55.29 | 65 |
| 1996 | 55.8 | 63 |
| 1995 | 48.52 | 97 |
| 1994 | 47.45 | 104 |
| 1993 | 46.72 | 105 |
| 1992 | 46.32 | 107 |
| 1991 | 44.86 | 108 |
| 1990 | 44.63 | 109 |