| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 37.72 | 15 |
| 2015 | 37.77 | 20 |
| 2014 | 37.89 | 25 |
| 2013 | 36.7 | 37 |
| 2012 | 36.9 | 38 |
| 2011 | 37.02 | 38 |
| 2010 | 36.78 | 39 |
| 2009 | 36.77 | 30 |
| 2008 | 37.69 | 38 |
| 2007 | 38.24 | 35 |
| 2006 | 38.17 | 37 |
| 2005 | 37.71 | 30 |
| 2004 | 37.63 | 32 |
| 2003 | 35.71 | 36 |
| 2002 | 36.38 | 34 |
| 2001 | 37.55 | 30 |
| 2000 | 37.18 | 31 |
| 1999 | 37.59 | 23 |
| 1998 | 38.52 | 17 |
| 1997 | 39.72 | 19 |
| 1996 | 40.53 | 17 |
| 1995 | 38.96 | 23 |
| 1994 | 38.73 | 27 |
| 1993 | 38.91 | 26 |