| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 62 | 104 |
| 2015 | 62.04 | 104 |
| 2014 | 62.15 | 102 |
| 2013 | 62.38 | 101 |
| 2012 | 63.21 | 96 |
| 2011 | 63.98 | 84 |
| 2010 | 64.37 | 82 |
| 2009 | 65.33 | 74 |
| 2008 | 66.06 | 66 |
| 2007 | 65.86 | 68 |
| 2006 | 66.26 | 63 |
| 2005 | 65.86 | 67 |
| 2004 | 66.18 | 63 |
| 2003 | 65.56 | 66 |
| 2002 | 65.86 | 67 |
| 2001 | 65.41 | 70 |
| 2000 | 65.76 | 64 |
| 1999 | 66.17 | 64 |
| 1998 | 65.44 | 67 |
| 1997 | 65.75 | 65 |
| 1996 | 65.37 | 68 |
| 1995 | 65.31 | 67 |
| 1994 | 64.48 | 73 |
| 1993 | 67.24 | 50 |
| 1992 | 67.96 | 48 |
| 1991 | 68.04 | 46 |
| 1990 | 68.27 | 48 |