| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 59.76 | 121 |
| 2015 | 59.35 | 125 |
| 2014 | 58.94 | 128 |
| 2013 | 58.73 | 130 |
| 2012 | 58.54 | 129 |
| 2011 | 59.9 | 121 |
| 2010 | 61.18 | 107 |
| 2009 | 62.47 | 97 |
| 2008 | 63.69 | 93 |
| 2007 | 62.97 | 94 |
| 2006 | 62.2 | 98 |
| 2005 | 61.35 | 102 |
| 2004 | 60.54 | 110 |
| 2003 | 59.66 | 116 |
| 2002 | 58.7 | 123 |
| 2001 | 57.63 | 130 |
| 2000 | 56.46 | 139 |
| 1999 | 55.94 | 141 |
| 1998 | 55.4 | 144 |
| 1997 | 54.86 | 149 |
| 1996 | 55.39 | 144 |
| 1995 | 56.02 | 139 |
| 1994 | 56.68 | 139 |
| 1993 | 56.48 | 140 |
| 1992 | 56.25 | 140 |
| 1991 | 56.18 | 140 |
| 1990 | 56.16 | 138 |