| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 67.45 | 147 |
| 2015 | 67.82 | 146 |
| 2014 | 68.23 | 142 |
| 2013 | 68.33 | 139 |
| 2012 | 68.14 | 139 |
| 2011 | 68.43 | 137 |
| 2010 | 69.24 | 132 |
| 2009 | 70.77 | 118 |
| 2008 | 72.67 | 109 |
| 2007 | 73.46 | 103 |
| 2006 | 73.51 | 101 |
| 2005 | 72.86 | 108 |
| 2004 | 71.56 | 120 |
| 2003 | 70.95 | 126 |
| 2002 | 70.95 | 127 |
| 2001 | 71.37 | 126 |
| 2000 | 71.46 | 127 |
| 1999 | 70.79 | 133 |
| 1998 | 69.83 | 140 |
| 1997 | 68.58 | 149 |
| 1996 | 68.49 | 154 |
| 1995 | 68.27 | 157 |
| 1994 | 68.47 | 158 |
| 1993 | 68.11 | 161 |
| 1992 | 68.51 | 161 |
| 1991 | 70.64 | 150 |
| 1990 | 70.65 | 152 |