| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 64.02 | 98 |
| 2015 | 63.47 | 99 |
| 2014 | 62.91 | 98 |
| 2013 | 62.34 | 99 |
| 2012 | 61.76 | 99 |
| 2011 | 61.17 | 99 |
| 2010 | 60.57 | 100 |
| 2009 | 59.96 | 101 |
| 2008 | 59.36 | 101 |
| 2007 | 58.75 | 101 |
| 2006 | 58.14 | 101 |
| 2005 | 57.52 | 102 |
| 2004 | 56.91 | 102 |
| 2003 | 56.29 | 101 |
| 2002 | 55.67 | 104 |
| 2001 | 55.04 | 105 |
| 2000 | 54.4 | 106 |
| 1999 | 53.74 | 106 |
| 1998 | 53.09 | 108 |
| 1997 | 52.43 | 108 |
| 1996 | 51.77 | 112 |
| 1995 | 51.11 | 112 |
| 1994 | 50.45 | 113 |
| 1993 | 49.79 | 115 |
| 1992 | 49.13 | 118 |
| 1991 | 48.47 | 119 |
| 1990 | 47.92 | 119 |
| 1989 | 47.39 | 117 |
| 1988 | 46.87 | 116 |
| 1987 | 46.34 | 115 |
| 1986 | 45.82 | 113 |