| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 36.94 | 8 |
| 2015 | 35.86 | 8 |
| 2014 | 34.7 | 8 |
| 2013 | 33.88 | 6 |
| 2012 | 33.41 | 6 |
| 2011 | 33.19 | 6 |
| 2010 | 33.17 | 5 |
| 2009 | 33.38 | 5 |
| 2008 | 33.89 | 5 |
| 2007 | 34.61 | 5 |
| 2006 | 35.41 | 4 |
| 2005 | 36.24 | 4 |
| 2004 | 36.81 | 4 |
| 2003 | 37.28 | 4 |
| 2002 | 37.68 | 3 |
| 2001 | 38.11 | 3 |
| 2000 | 38.65 | 4 |
| 1999 | 38.92 | 4 |
| 1998 | 39.25 | 3 |
| 1997 | 39.67 | 3 |
| 1996 | 40.04 | 3 |
| 1995 | 40.18 | 3 |
| 1994 | 40.54 | 2 |
| 1993 | 40.85 | 3 |
| 1992 | 41.14 | 3 |
| 1991 | 41.5 | 3 |
| 1990 | 42 | 2 |
| 1989 | 42.39 | 2 |
| 1988 | 42.86 | 2 |
| 1987 | 43.41 | 2 |
| 1986 | 44 | 5 |