| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 63.87 | 47 |
| 2015 | 63.95 | 47 |
| 2014 | 64.17 | 46 |
| 2013 | 63.99 | 47 |
| 2012 | 63.43 | 54 |
| 2011 | 63.92 | 48 |
| 2010 | 63.49 | 49 |
| 2009 | 63.9 | 49 |
| 2008 | 65.36 | 47 |
| 2007 | 65.66 | 42 |
| 2006 | 65.23 | 43 |
| 2005 | 64.71 | 43 |
| 2004 | 63.79 | 47 |
| 2003 | 62.79 | 49 |
| 2002 | 62.67 | 49 |
| 2001 | 61.88 | 57 |
| 2000 | 60.81 | 63 |
| 1999 | 60.07 | 66 |
| 1998 | 59.53 | 66 |
| 1997 | 60.48 | 62 |
| 1996 | 61.01 | 57 |
| 1995 | 60.13 | 66 |
| 1994 | 58.39 | 78 |
| 1993 | 56.76 | 90 |
| 1992 | 56.27 | 95 |
| 1991 | 56.7 | 94 |