| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 61.66 | 58 |
| 2015 | 62.08 | 57 |
| 2014 | 62.66 | 54 |
| 2013 | 62.9 | 55 |
| 2012 | 63.53 | 53 |
| 2011 | 63.34 | 52 |
| 2010 | 63.37 | 50 |
| 2009 | 64.23 | 47 |
| 2008 | 65.5 | 46 |
| 2007 | 64.48 | 47 |
| 2006 | 63.13 | 54 |
| 2005 | 62.46 | 55 |
| 2004 | 62.64 | 53 |
| 2003 | 62.76 | 50 |
| 2002 | 63.5 | 47 |
| 2001 | 63.53 | 47 |
| 2000 | 63.84 | 46 |
| 1999 | 63.79 | 47 |
| 1998 | 63.56 | 47 |
| 1997 | 62.19 | 55 |
| 1996 | 60.84 | 60 |
| 1995 | 58.67 | 79 |
| 1994 | 58.58 | 75 |
| 1993 | 57.81 | 81 |
| 1992 | 58.13 | 80 |
| 1991 | 58.69 | 75 |