| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 39.38 | 110 |
| 2015 | 40.28 | 108 |
| 2014 | 41.22 | 105 |
| 2013 | 42.19 | 103 |
| 2012 | 43.19 | 102 |
| 2011 | 44.19 | 100 |
| 2010 | 45.2 | 99 |
| 2009 | 46.22 | 97 |
| 2008 | 47.24 | 94 |
| 2007 | 48.26 | 92 |
| 2006 | 49.28 | 91 |
| 2005 | 50.3 | 89 |
| 2004 | 51.32 | 89 |
| 2003 | 52.34 | 89 |
| 2002 | 53.16 | 87 |
| 2001 | 53.57 | 87 |
| 2000 | 53.98 | 86 |
| 1999 | 54.39 | 84 |
| 1998 | 54.8 | 84 |
| 1997 | 55.21 | 84 |
| 1996 | 55.62 | 85 |
| 1995 | 56.03 | 84 |
| 1994 | 56.44 | 84 |
| 1993 | 56.84 | 83 |
| 1992 | 57.25 | 82 |
| 1991 | 58.01 | 82 |
| 1990 | 59.34 | 80 |
| 1989 | 60.65 | 78 |
| 1988 | 61.95 | 73 |
| 1987 | 63.24 | 74 |
| 1986 | 64.5 | 73 |