| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 57.2 | 115 |
| 2015 | 57.1 | 115 |
| 2014 | 57.03 | 112 |
| 2013 | 56.98 | 109 |
| 2012 | 56.96 | 108 |
| 2011 | 56.96 | 108 |
| 2010 | 56.99 | 106 |
| 2009 | 57.05 | 105 |
| 2008 | 57.13 | 103 |
| 2007 | 57.24 | 103 |
| 2006 | 57.37 | 103 |
| 2005 | 57.53 | 101 |
| 2004 | 57.71 | 99 |
| 2003 | 57.92 | 99 |
| 2002 | 58.13 | 98 |
| 2001 | 58.34 | 97 |
| 2000 | 58.55 | 96 |
| 1999 | 58.76 | 93 |
| 1998 | 58.97 | 91 |
| 1997 | 59.17 | 89 |
| 1996 | 59.38 | 86 |
| 1995 | 59.59 | 85 |
| 1994 | 59.79 | 84 |
| 1993 | 59.29 | 84 |
| 1992 | 58.76 | 84 |
| 1991 | 58.23 | 85 |
| 1990 | 57.79 | 86 |
| 1989 | 57.37 | 84 |
| 1988 | 56.96 | 83 |
| 1987 | 56.54 | 84 |
| 1986 | 56.12 | 85 |