| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 65.94 | 35 |
| 2015 | 65.73 | 36 |
| 2014 | 65.5 | 36 |
| 2013 | 64.97 | 37 |
| 2012 | 65.7 | 35 |
| 2011 | 65.54 | 37 |
| 2010 | 65.64 | 34 |
| 2009 | 65.53 | 35 |
| 2008 | 65.47 | 36 |
| 2007 | 64.82 | 38 |
| 2006 | 58.02 | 60 |
| 2005 | 57.46 | 61 |
| 2004 | 57.95 | 58 |
| 2003 | 58.41 | 57 |
| 2002 | 60.46 | 47 |
| 2001 | 62.47 | 42 |
| 2000 | 57.65 | 57 |
| 1999 | 61.1 | 43 |
| 1998 | 58.28 | 51 |
| 1997 | 57.58 | 56 |
| 1996 | 54.38 | 70 |
| 1995 | 51.25 | 84 |
| 1994 | 48.45 | 95 |
| 1993 | 46.94 | 103 |
| 1992 | 45.45 | 109 |
| 1991 | 43.96 | 116 |
| 1990 | 46.08 | 102 |