| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 67.59 | 94 |
| 2015 | 67.57 | 94 |
| 2014 | 67.57 | 94 |
| 2013 | 67.49 | 93 |
| 2012 | 67.27 | 95 |
| 2011 | 66.58 | 102 |
| 2010 | 66.25 | 104 |
| 2009 | 65.14 | 111 |
| 2008 | 63.98 | 129 |
| 2007 | 66.4 | 108 |
| 2006 | 63.05 | 137 |
| 2005 | 62.9 | 132 |
| 2004 | 63.09 | 130 |
| 2003 | 63.12 | 131 |
| 2002 | 62.63 | 134 |
| 2001 | 64.07 | 129 |
| 2000 | 65.05 | 123 |
| 1999 | 63.14 | 138 |
| 1998 | 63.09 | 138 |
| 1997 | 70.59 | 86 |
| 1996 | 70.49 | 86 |
| 1995 | 66.9 | 112 |
| 1994 | 65.03 | 126 |
| 1993 | 72.27 | 80 |
| 1992 | 69.6 | 98 |
| 1991 | 73.6 | 73 |