| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 59.84 | 79 |
| 2015 | 59.52 | 83 |
| 2014 | 59 | 85 |
| 2013 | 58.84 | 87 |
| 2012 | 58.66 | 90 |
| 2011 | 58.39 | 90 |
| 2010 | 58.11 | 86 |
| 2009 | 57.93 | 89 |
| 2008 | 58.26 | 95 |
| 2007 | 58.06 | 96 |
| 2006 | 57.93 | 94 |
| 2005 | 57.84 | 91 |
| 2004 | 58.44 | 77 |
| 2003 | 59.09 | 72 |
| 2002 | 60.09 | 64 |
| 2001 | 61.11 | 62 |
| 2000 | 62.13 | 56 |
| 1999 | 63.15 | 51 |
| 1998 | 62 | 54 |
| 1997 | 62.94 | 50 |
| 1996 | 63.87 | 43 |
| 1995 | 64.79 | 41 |
| 1994 | 65.66 | 36 |
| 1993 | 65.5 | 37 |
| 1992 | 66.11 | 35 |
| 1991 | 66.69 | 37 |