| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 53.47 | 88 |
| 2015 | 53.18 | 91 |
| 2014 | 52.88 | 92 |
| 2013 | 52.4 | 96 |
| 2012 | 51.9 | 98 |
| 2011 | 51.4 | 102 |
| 2010 | 50.92 | 103 |
| 2009 | 50.31 | 105 |
| 2008 | 49.7 | 104 |
| 2007 | 49.11 | 106 |
| 2006 | 48.53 | 109 |
| 2005 | 47.99 | 112 |
| 2004 | 47.6 | 116 |
| 2003 | 47.18 | 118 |
| 2002 | 46.81 | 119 |
| 2001 | 46.44 | 120 |
| 2000 | 46.07 | 119 |
| 1999 | 45.77 | 119 |
| 1998 | 45.47 | 116 |
| 1997 | 45.15 | 118 |
| 1996 | 44.81 | 117 |
| 1995 | 44.45 | 119 |
| 1994 | 44.05 | 121 |
| 1993 | 43.64 | 119 |
| 1992 | 43.22 | 121 |
| 1991 | 42.78 | 122 |
| 1990 | 42.31 | 123 |