| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2015 | 62.343 | 75 |
| 2014 | 61.081 | 84 |
| 2013 | 60.662 | 90 |
| 2012 | 58.93 | 98 |
| 2011 | 61.015 | 81 |
| 2010 | 60.542 | 91 |
| 2009 | 59.431 | 97 |
| 2008 | 54.391 | 106 |
| 2007 | 56.01 | 100 |
| 2006 | 54.891 | 102 |
| 2005 | 59.495 | 82 |
| 2004 | 60.841 | 75 |
| 2003 | 60.714 | 78 |
| 2002 | 56.744 | 94 |
| 2001 | 58.567 | 86 |
| 2000 | 60.217 | 75 |
| 1999 | 65.906 | 45 |
| 1998 | 64.981 | 46 |
| 1997 | 66.073 | 41 |
| 1996 | 65.906 | 38 |
| 1995 | 64.945 | 42 |
| 1994 | 61.795 | 40 |
| 1993 | 66.45 | 26 |
| 1992 | 64.636 | 32 |
| 1991 | 61.155 | 35 |
| 1990 | 58.69 | 35 |
| 1989 | 54.348 | 34 |
| 1988 | 54.484 | 38 |
| 1987 | 57.953 | 27 |
| 1986 | 53.815 | 41 |