| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 66.68 | 100 |
| 2015 | 66.84 | 97 |
| 2014 | 67.12 | 96 |
| 2013 | 66.92 | 98 |
| 2012 | 66.99 | 99 |
| 2011 | 67.29 | 97 |
| 2010 | 67.29 | 97 |
| 2009 | 69.07 | 84 |
| 2008 | 67.51 | 101 |
| 2007 | 66.54 | 107 |
| 2006 | 66.05 | 109 |
| 2005 | 66.2 | 106 |
| 2004 | 66.27 | 106 |
| 2003 | 66.69 | 102 |
| 2002 | 66.8 | 104 |
| 2001 | 67 | 107 |
| 2000 | 66.83 | 109 |
| 1999 | 66.82 | 106 |
| 1998 | 67.39 | 105 |
| 1997 | 67.21 | 108 |
| 1996 | 67.19 | 107 |
| 1995 | 66.91 | 111 |
| 1994 | 69.59 | 93 |
| 1993 | 69.93 | 93 |
| 1992 | 69.82 | 95 |
| 1991 | 69.72 | 99 |