| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 41.28 | 4 |
| 2015 | 40.66 | 6 |
| 2014 | 41.97 | 4 |
| 2013 | 39.72 | 9 |
| 2012 | 42.6 | 6 |
| 2011 | 30.76 | 15 |
| 2010 | 31.03 | 17 |
| 2009 | 32.91 | 15 |
| 2008 | 40.71 | 7 |
| 2007 | 35.82 | 10 |
| 2006 | 35.88 | 11 |
| 2005 | 39.41 | 10 |
| 2004 | 36.23 | 14 |
| 2003 | 35.8 | 20 |
| 2002 | 38.19 | 18 |
| 2001 | 37.72 | 13 |
| 2000 | 35.14 | 19 |
| 1999 | 36.93 | 18 |
| 1998 | 34.96 | 24 |
| 1997 | 42.19 | 13 |
| 1996 | 40.84 | 17 |
| 1995 | 37.76 | 23 |
| 1994 | 34.92 | 28 |
| 1993 | 44.14 | 16 |
| 1992 | 35.26 | 24 |
| 1991 | 32.82 | 29 |
| 1990 | 33.75 | 22 |
| 1989 | 32.22 | 24 |
| 1988 | 33.57 | 21 |
| 1987 | 33.48 | 19 |
| 1986 | 34.76 | 20 |