| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 60.8 | 53 |
| 2015 | 60.87 | 53 |
| 2014 | 60.91 | 53 |
| 2013 | 60.7 | 53 |
| 2012 | 60.26 | 54 |
| 2011 | 59.75 | 54 |
| 2010 | 59.03 | 56 |
| 2009 | 59.45 | 56 |
| 2008 | 59.91 | 54 |
| 2007 | 59.87 | 54 |
| 2006 | 59.6 | 55 |
| 2005 | 59.33 | 54 |
| 2004 | 58.58 | 55 |
| 2003 | 58.59 | 54 |
| 2002 | 58.71 | 54 |
| 2001 | 58.76 | 53 |
| 2000 | 58.09 | 54 |
| 1999 | 57.4 | 58 |
| 1998 | 56.97 | 60 |
| 1997 | 57.76 | 55 |
| 1996 | 58.78 | 46 |
| 1995 | 58.59 | 47 |
| 1994 | 58.14 | 49 |
| 1993 | 58.98 | 46 |
| 1992 | 60.49 | 43 |
| 1991 | 61.9 | 41 |
| 1990 | 62.43 | 41 |