| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 62.21 | 101 |
| 2015 | 62.15 | 101 |
| 2014 | 62.07 | 105 |
| 2013 | 62.07 | 103 |
| 2012 | 62.12 | 103 |
| 2011 | 62.2 | 100 |
| 2010 | 62.3 | 98 |
| 2009 | 63.12 | 94 |
| 2008 | 63.94 | 89 |
| 2007 | 64.77 | 78 |
| 2006 | 65.6 | 69 |
| 2005 | 66.44 | 62 |
| 2004 | 67.25 | 56 |
| 2003 | 68.07 | 53 |
| 2002 | 68.88 | 49 |
| 2001 | 69.68 | 45 |
| 2000 | 70.47 | 38 |
| 1999 | 70.71 | 38 |
| 1998 | 70.94 | 37 |
| 1997 | 71.16 | 37 |
| 1996 | 71.39 | 38 |
| 1995 | 72.27 | 36 |
| 1994 | 73.11 | 33 |
| 1993 | 73.94 | 31 |
| 1992 | 74.75 | 28 |
| 1991 | 75.54 | 26 |
| 1990 | 75.65 | 25 |