| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 66.96 | 62 |
| 2015 | 67.16 | 59 |
| 2014 | 67.39 | 59 |
| 2013 | 67.52 | 56 |
| 2012 | 68 | 52 |
| 2011 | 67.46 | 59 |
| 2010 | 67.2 | 58 |
| 2009 | 66.67 | 61 |
| 2008 | 66.66 | 61 |
| 2007 | 66.36 | 61 |
| 2006 | 66.09 | 64 |
| 2005 | 64.92 | 72 |
| 2004 | 63.9 | 79 |
| 2003 | 63.94 | 79 |
| 2002 | 63.93 | 76 |
| 2001 | 64.85 | 73 |
| 2000 | 65.38 | 67 |
| 1999 | 64.86 | 75 |
| 1998 | 64.27 | 78 |
| 1997 | 64.69 | 74 |
| 1996 | 65.46 | 67 |
| 1995 | 64.26 | 75 |
| 1994 | 65.14 | 68 |
| 1993 | 64.96 | 69 |
| 1992 | 65.38 | 66 |
| 1991 | 65.21 | 73 |
| 1990 | 64.94 | 74 |