| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 39.2 | 133 |
| 2015 | 39.19 | 132 |
| 2014 | 39.2 | 131 |
| 2013 | 39.22 | 129 |
| 2012 | 39.25 | 129 |
| 2011 | 39.27 | 130 |
| 2010 | 39.29 | 127 |
| 2009 | 39.41 | 126 |
| 2008 | 39.53 | 123 |
| 2007 | 39.68 | 123 |
| 2006 | 39.84 | 124 |
| 2005 | 39.97 | 124 |
| 2004 | 40.11 | 121 |
| 2003 | 40.27 | 116 |
| 2002 | 40.41 | 112 |
| 2001 | 40.54 | 110 |
| 2000 | 40.7 | 104 |
| 1999 | 40.85 | 101 |
| 1998 | 40.97 | 98 |
| 1997 | 40.97 | 99 |
| 1996 | 40.76 | 98 |
| 1995 | 40.62 | 97 |
| 1994 | 40.5 | 97 |
| 1993 | 40.3 | 97 |
| 1992 | 40.18 | 97 |
| 1991 | 40.08 | 95 |
| 1990 | 39.95 | 92 |