| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2015 | 37.91 | 19 |
| 2014 | 37.85 | 26 |
| 2013 | 38.29 | 27 |
| 2012 | 39.71 | 24 |
| 2011 | 38.6 | 31 |
| 2010 | 39.46 | 27 |
| 2009 | 41.7 | 18 |
| 2008 | 41.33 | 28 |
| 2007 | 41.97 | 23 |
| 2006 | 41.37 | 27 |
| 2005 | 41.4 | 22 |
| 2004 | 41.56 | 20 |
| 2003 | 40.3 | 21 |
| 2002 | 41.36 | 18 |
| 2001 | 41.39 | 17 |
| 2000 | 41.07 | 20 |
| 1999 | 44.29 | 12 |
| 1998 | 45.03 | 9 |
| 1997 | 44.99 | 11 |
| 1996 | 43.15 | 15 |
| 1995 | 44.98 | 11 |
| 1994 | 42.21 | 18 |
| 1993 | 42.32 | 15 |
| 1992 | 42.07 | 20 |
| 1991 | 42.17 | 18 |
| 1990 | 43.15 | 21 |
| 1989 | 43.83 | 13 |
| 1988 | 41.13 | 17 |
| 1987 | 37.12 | 27 |
| 1986 | 29.45 | 50 |