| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 55.178 | 90 |
| 2015 | 52.612 | 121 |
| 2014 | 50.036 | 134 |
| 2013 | 50.239 | 134 |
| 2012 | 50.215 | 131 |
| 2011 | 47.852 | 137 |
| 2010 | 48.483 | 139 |
| 2009 | 48.821 | 133 |
| 2008 | 48.862 | 126 |
| 2007 | 49.166 | 126 |
| 2006 | 47.501 | 125 |
| 2005 | 48.793 | 121 |
| 2004 | 47.954 | 123 |
| 2003 | 47.994 | 120 |
| 2002 | 48.718 | 121 |
| 2001 | 50.112 | 115 |
| 2000 | 50.127 | 112 |
| 1999 | 51.767 | 103 |
| 1998 | 52.025 | 97 |
| 1997 | 51.831 | 97 |
| 1996 | 51.124 | 92 |
| 1995 | 50.919 | 95 |
| 1994 | 50.37 | 77 |
| 1993 | 50.214 | 73 |
| 1992 | 50.119 | 68 |
| 1991 | 49.182 | 66 |
| 1990 | 51.963 | 52 |
| 1989 | 52.345 | 41 |
| 1988 | 52.2 | 45 |
| 1987 | 52.425 | 44 |
| 1986 | 52.4 | 43 |