| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 63.81 | 48 |
| 2015 | 63.79 | 48 |
| 2014 | 63.74 | 49 |
| 2013 | 63.65 | 49 |
| 2012 | 63.63 | 50 |
| 2011 | 63.59 | 49 |
| 2010 | 63.55 | 48 |
| 2009 | 63.39 | 52 |
| 2008 | 63.11 | 58 |
| 2007 | 63.27 | 56 |
| 2006 | 63.74 | 51 |
| 2005 | 64.17 | 45 |
| 2004 | 64.62 | 44 |
| 2003 | 64.85 | 42 |
| 2002 | 64.8 | 44 |
| 2001 | 65.15 | 44 |
| 2000 | 65.18 | 41 |
| 1999 | 65.18 | 41 |
| 1998 | 65.16 | 38 |
| 1997 | 65.23 | 37 |
| 1996 | 65.29 | 36 |
| 1995 | 65.47 | 38 |
| 1994 | 65.74 | 34 |
| 1993 | 65.97 | 35 |
| 1992 | 65.13 | 36 |
| 1991 | 64.86 | 39 |