| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 66.07 | 102 |
| 2015 | 66.08 | 103 |
| 2014 | 66.26 | 104 |
| 2013 | 66.14 | 106 |
| 2012 | 65.96 | 107 |
| 2011 | 68.29 | 92 |
| 2010 | 66.24 | 105 |
| 2009 | 65.92 | 106 |
| 2008 | 65.44 | 118 |
| 2007 | 64.97 | 120 |
| 2006 | 64.59 | 121 |
| 2005 | 64.17 | 123 |
| 2004 | 63.92 | 124 |
| 2003 | 63.51 | 128 |
| 2002 | 63.54 | 127 |
| 2001 | 63.36 | 135 |
| 2000 | 63.11 | 137 |
| 1999 | 62.85 | 140 |
| 1998 | 62.54 | 144 |
| 1997 | 62.26 | 142 |
| 1996 | 61.99 | 146 |
| 1995 | 62.06 | 148 |
| 1994 | 61.62 | 148 |
| 1993 | 61.6 | 148 |
| 1992 | 61.49 | 152 |
| 1991 | 60.29 | 163 |