| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 63.95 | 165 |
| 2015 | 64.17 | 162 |
| 2014 | 64.39 | 161 |
| 2013 | 64.82 | 159 |
| 2012 | 65.92 | 155 |
| 2011 | 66.74 | 152 |
| 2010 | 66.79 | 151 |
| 2009 | 67.4 | 153 |
| 2008 | 68.83 | 139 |
| 2007 | 69.13 | 133 |
| 2006 | 69.42 | 131 |
| 2005 | 69.27 | 131 |
| 2004 | 69.42 | 131 |
| 2003 | 69.86 | 131 |
| 2002 | 70.36 | 130 |
| 2001 | 70.15 | 133 |
| 2000 | 69.72 | 140 |
| 1999 | 69.47 | 140 |
| 1998 | 69.68 | 142 |
| 1997 | 68.56 | 150 |
| 1996 | 68.08 | 158 |
| 1995 | 67.87 | 159 |
| 1994 | 68.75 | 155 |
| 1993 | 68.91 | 157 |
| 1992 | 69.89 | 151 |
| 1991 | 72.21 | 138 |
| 1990 | 72.27 | 137 |