| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 63.35 | 40 |
| 2015 | 63.58 | 40 |
| 2014 | 63.73 | 40 |
| 2013 | 63.78 | 39 |
| 2012 | 63.76 | 40 |
| 2011 | 63.74 | 40 |
| 2010 | 63.72 | 41 |
| 2009 | 64.33 | 40 |
| 2008 | 64.92 | 38 |
| 2007 | 65.51 | 35 |
| 2006 | 66.16 | 32 |
| 2005 | 66.9 | 32 |
| 2004 | 67.72 | 28 |
| 2003 | 68.61 | 28 |
| 2002 | 69.54 | 27 |
| 2001 | 70.43 | 25 |
| 2000 | 71.24 | 21 |
| 1999 | 71.63 | 19 |
| 1998 | 71.97 | 19 |
| 1997 | 72.29 | 19 |
| 1996 | 72.55 | 18 |
| 1995 | 72.78 | 18 |
| 1994 | 72.97 | 18 |
| 1993 | 73.12 | 18 |
| 1992 | 73.25 | 18 |
| 1991 | 73.37 | 18 |
| 1990 | 73.49 | 18 |