| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 35.54 | 22 |
| 2015 | 40.44 | 14 |
| 2014 | 48.57 | 10 |
| 2013 | 51.83 | 11 |
| 2012 | 55.47 | 11 |
| 2011 | 58.83 | 11 |
| 2010 | 56.31 | 12 |
| 2009 | 55.49 | 8 |
| 2008 | 66.22 | 9 |
| 2007 | 62.07 | 9 |
| 2006 | 61.26 | 10 |
| 2005 | 60.33 | 10 |
| 2004 | 57.46 | 6 |
| 2003 | 53.27 | 8 |
| 2002 | 44.82 | 14 |
| 2001 | 47.07 | 11 |
| 2000 | 49.49 | 11 |
| 1999 | 42.56 | 14 |
| 1998 | 40.82 | 15 |
| 1997 | 44.77 | 12 |
| 1996 | 47.07 | 12 |
| 1995 | 46.95 | 7 |
| 1994 | 48.7 | 6 |
| 1993 | 44.8 | 12 |
| 1992 | 45.63 | 14 |
| 1991 | 47.95 | 12 |
| 1990 | 47.18 | 14 |
| 1989 | 43.64 | 14 |
| 1988 | 40.35 | 18 |
| 1987 | 41.26 | 17 |
| 1986 | 39.1 | 18 |