| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 63.91 | 149 |
| 2015 | 64.86 | 149 |
| 2014 | 65.39 | 150 |
| 2013 | 66.07 | 150 |
| 2012 | 66.82 | 150 |
| 2011 | 67.38 | 148 |
| 2010 | 67.53 | 148 |
| 2009 | 68.21 | 148 |
| 2008 | 68.9 | 148 |
| 2007 | 69.61 | 148 |
| 2006 | 70.37 | 148 |
| 2005 | 71.17 | 147 |
| 2004 | 71.68 | 146 |
| 2003 | 72.13 | 142 |
| 2002 | 72.57 | 140 |
| 2001 | 73.22 | 139 |
| 2000 | 74.3 | 138 |
| 1999 | 73.68 | 130 |
| 1998 | 73.31 | 128 |
| 1997 | 73.26 | 127 |
| 1996 | 73.44 | 126 |
| 1995 | 73.81 | 125 |
| 1994 | 73.22 | 120 |
| 1993 | 72.64 | 114 |
| 1992 | 72.18 | 113 |
| 1991 | 72.02 | 111 |
| 1990 | 72.36 | 112 |
| 1989 | 73.5 | 113 |
| 1988 | 74.85 | 115 |
| 1987 | 76.21 | 117 |
| 1986 | 77.57 | 120 |