| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 67.24 | 60 |
| 2015 | 67.09 | 62 |
| 2014 | 66.91 | 63 |
| 2013 | 66.79 | 64 |
| 2012 | 66.62 | 64 |
| 2011 | 66.41 | 64 |
| 2010 | 66.17 | 65 |
| 2009 | 65.95 | 69 |
| 2008 | 65.64 | 70 |
| 2007 | 65.29 | 71 |
| 2006 | 65.01 | 73 |
| 2005 | 64.79 | 76 |
| 2004 | 65.33 | 70 |
| 2003 | 65.94 | 64 |
| 2002 | 66.6 | 62 |
| 2001 | 67.29 | 59 |
| 2000 | 67.99 | 51 |
| 1999 | 68.72 | 48 |
| 1998 | 69.46 | 45 |
| 1997 | 70.21 | 41 |
| 1996 | 70.96 | 39 |
| 1995 | 71.7 | 40 |
| 1994 | 72.39 | 37 |
| 1993 | 73.09 | 34 |
| 1992 | 73.8 | 30 |
| 1991 | 74.51 | 29 |
| 1990 | 75.22 | 27 |