| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 69.42 | 87 |
| 2015 | 69.51 | 85 |
| 2014 | 69.91 | 82 |
| 2013 | 69.87 | 82 |
| 2012 | 69.24 | 86 |
| 2011 | 70.05 | 79 |
| 2010 | 69.79 | 82 |
| 2009 | 70.06 | 82 |
| 2008 | 72.03 | 75 |
| 2007 | 72.89 | 68 |
| 2006 | 72.67 | 66 |
| 2005 | 72.13 | 66 |
| 2004 | 71.58 | 70 |
| 2003 | 70.31 | 78 |
| 2002 | 70.57 | 78 |
| 2001 | 69.63 | 89 |
| 2000 | 68.74 | 93 |
| 1999 | 67.79 | 100 |
| 1998 | 67.51 | 103 |
| 1997 | 68.92 | 94 |
| 1996 | 69.53 | 94 |
| 1995 | 69.14 | 94 |
| 1994 | 67.04 | 110 |
| 1993 | 65.43 | 124 |
| 1992 | 64.77 | 133 |
| 1991 | 65.43 | 133 |