| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 63.56 | 49 |
| 2015 | 63.33 | 50 |
| 2014 | 63.38 | 50 |
| 2013 | 63.38 | 50 |
| 2012 | 63.6 | 52 |
| 2011 | 62.87 | 54 |
| 2010 | 63.26 | 51 |
| 2009 | 62.58 | 57 |
| 2008 | 62 | 64 |
| 2007 | 61.52 | 65 |
| 2006 | 60.68 | 67 |
| 2005 | 60.01 | 67 |
| 2004 | 60.76 | 61 |
| 2003 | 60.87 | 58 |
| 2002 | 60.96 | 58 |
| 2001 | 61.83 | 58 |
| 2000 | 63.34 | 49 |
| 1999 | 63.38 | 50 |
| 1998 | 61.77 | 55 |
| 1997 | 62.93 | 51 |
| 1996 | 64.64 | 41 |
| 1995 | 64.57 | 42 |
| 1994 | 60.97 | 55 |
| 1993 | 62.99 | 46 |
| 1992 | 63.23 | 45 |
| 1991 | 63.64 | 45 |