| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 52.97 | 93 |
| 2015 | 52.85 | 96 |
| 2014 | 52.5 | 95 |
| 2013 | 52.16 | 94 |
| 2012 | 51.84 | 90 |
| 2011 | 51.51 | 88 |
| 2010 | 51.12 | 88 |
| 2009 | 51.66 | 90 |
| 2008 | 52.2 | 91 |
| 2007 | 52.65 | 90 |
| 2006 | 52.94 | 89 |
| 2005 | 53.01 | 83 |
| 2004 | 54.58 | 87 |
| 2003 | 56.27 | 91 |
| 2002 | 58.05 | 93 |
| 2001 | 60.07 | 93 |
| 2000 | 62.5 | 97 |
| 1999 | 63.12 | 95 |
| 1998 | 63.82 | 94 |
| 1997 | 64.58 | 94 |
| 1996 | 65.22 | 93 |
| 1995 | 65.53 | 92 |
| 1994 | 66.91 | 92 |
| 1993 | 68.07 | 91 |
| 1992 | 68.99 | 91 |
| 1991 | 69.78 | 92 |
| 1990 | 70.56 | 92 |
| 1989 | 71 | 91 |
| 1988 | 71.4 | 91 |
| 1987 | 71.7 | 88 |
| 1986 | 71.86 | 85 |