| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 55.785 | 85 |
| 2015 | 54.278 | 115 |
| 2014 | 53.459 | 115 |
| 2013 | 53.369 | 118 |
| 2012 | 53.173 | 116 |
| 2011 | 52.012 | 116 |
| 2010 | 51.676 | 121 |
| 2009 | 50.655 | 127 |
| 2008 | 50.331 | 120 |
| 2007 | 49.373 | 124 |
| 2006 | 47.419 | 126 |
| 2005 | 46.133 | 128 |
| 2004 | 43.889 | 133 |
| 2003 | 41.783 | 142 |
| 2002 | 41.392 | 140 |
| 2001 | 44.53 | 134 |
| 2000 | 42.544 | 134 |
| 1999 | 43.925 | 123 |
| 1998 | 46.136 | 121 |
| 1997 | 49.327 | 104 |
| 1996 | 45.972 | 112 |
| 1995 | 49.954 | 103 |
| 1994 | 53.233 | 65 |
| 1993 | 26.985 | 128 |
| 1992 | 29.657 | 119 |
| 1991 | 29.371 | 119 |
| 1990 | 26.11 | 122 |
| 1989 | 24.4 | 109 |
| 1988 | 26.004 | 106 |
| 1987 | 26.078 | 107 |
| 1986 | 35.368 | 91 |