| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 62.74 | 96 |
| 2015 | 62.86 | 95 |
| 2014 | 62.94 | 94 |
| 2013 | 63.27 | 91 |
| 2012 | 63.49 | 92 |
| 2011 | 63.65 | 87 |
| 2010 | 63.76 | 89 |
| 2009 | 63.5 | 91 |
| 2008 | 64.28 | 84 |
| 2007 | 64.36 | 83 |
| 2006 | 64.6 | 81 |
| 2005 | 64.66 | 77 |
| 2004 | 63.58 | 85 |
| 2003 | 62.45 | 92 |
| 2002 | 61.3 | 100 |
| 2001 | 61.2 | 102 |
| 2000 | 61.19 | 99 |
| 1999 | 61.24 | 97 |
| 1998 | 61.34 | 95 |
| 1997 | 61.25 | 99 |
| 1996 | 61.02 | 102 |
| 1995 | 60.17 | 112 |
| 1994 | 59.38 | 118 |
| 1993 | 58.27 | 128 |
| 1992 | 57.03 | 136 |
| 1991 | 55.16 | 148 |
| 1990 | 57.17 | 131 |