| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 56.14 | 79 |
| 2015 | 55.808 | 105 |
| 2014 | 51.916 | 123 |
| 2013 | 51.754 | 121 |
| 2012 | 51.351 | 124 |
| 2011 | 51.073 | 124 |
| 2010 | 53.5 | 112 |
| 2009 | 55.153 | 113 |
| 2008 | 51.374 | 117 |
| 2007 | 53.931 | 111 |
| 2006 | 54.463 | 104 |
| 2005 | 56.565 | 96 |
| 2004 | 57.839 | 89 |
| 2003 | 58.246 | 91 |
| 2002 | 56.438 | 96 |
| 2001 | 54.709 | 102 |
| 2000 | 48.009 | 116 |
| 1999 | 54.647 | 89 |
| 1998 | 57.302 | 77 |
| 1997 | 54.702 | 87 |
| 1996 | 53.412 | 85 |
| 1995 | 51.925 | 92 |
| 1994 | 50.616 | 76 |
| 1993 | 48.307 | 79 |
| 1992 | 48.977 | 75 |
| 1991 | 48.082 | 72 |
| 1990 | 48.701 | 65 |
| 1989 | 47.658 | 62 |
| 1988 | 47.339 | 60 |
| 1987 | 50.642 | 51 |
| 1986 | 50.96 | 51 |