| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2015 | 16.105 | 24 |
| 2014 | 16.264 | 26 |
| 2013 | 15.835 | 27 |
| 2012 | 15.46 | 31 |
| 2011 | 14.962 | 34 |
| 2010 | 14.546 | 35 |
| 2009 | 15.03 | 43 |
| 2008 | 14.982 | 44 |
| 2007 | 16.07 | 37 |
| 2006 | 15.652 | 40 |
| 2005 | 15.249 | 49 |
| 2004 | 14.14 | 56 |
| 2003 | 14.517 | 66 |
| 2002 | 16.398 | 53 |
| 2001 | 20.057 | 44 |
| 2000 | 21.578 | 42 |
| 1999 | 21.894 | 45 |
| 1998 | 22.893 | 40 |
| 1997 | 26.27 | 30 |
| 1996 | 33.965 | 25 |
| 1995 | 42.833 | 18 |
| 1994 | 39 | 18 |
| 1993 | 31 | 24 |
| 1989 | 31 | 10 |
| 1988 | 29.625 | 9 |
| 1987 | 27.5 | 10 |
| 1986 | 18.5 | 18 |