| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 49.14 | 126 |
| 2015 | 48.13 | 122 |
| 2014 | 47.37 | 120 |
| 2013 | 46.68 | 116 |
| 2012 | 46.11 | 114 |
| 2011 | 45.73 | 113 |
| 2010 | 45.59 | 109 |
| 2009 | 45.69 | 106 |
| 2008 | 46.07 | 104 |
| 2007 | 46.74 | 103 |
| 2006 | 47.69 | 104 |
| 2005 | 48.83 | 104 |
| 2004 | 50.79 | 105 |
| 2003 | 52.94 | 105 |
| 2002 | 55.06 | 107 |
| 2001 | 56.98 | 109 |
| 2000 | 58.67 | 110 |
| 1999 | 60.56 | 110 |
| 1998 | 62.18 | 110 |
| 1997 | 63.57 | 109 |
| 1996 | 64.82 | 109 |
| 1995 | 65.94 | 109 |
| 1994 | 66.24 | 107 |
| 1993 | 66.32 | 105 |
| 1992 | 66.16 | 105 |
| 1991 | 65.74 | 102 |
| 1990 | 65.07 | 96 |
| 1989 | 64.75 | 92 |
| 1988 | 64.35 | 92 |
| 1987 | 63.92 | 87 |
| 1986 | 63.41 | 85 |