| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 46.4 | 107 |
| 2015 | 46.29 | 107 |
| 2014 | 46.19 | 106 |
| 2013 | 45.69 | 104 |
| 2012 | 44.46 | 112 |
| 2011 | 43.6 | 115 |
| 2010 | 42.71 | 118 |
| 2009 | 42.1 | 121 |
| 2008 | 42.76 | 121 |
| 2007 | 43.08 | 116 |
| 2006 | 42.59 | 115 |
| 2005 | 41.3 | 121 |
| 2004 | 39.76 | 126 |
| 2003 | 38.15 | 130 |
| 2002 | 35.08 | 140 |
| 2001 | 36.53 | 133 |
| 2000 | 33.88 | 145 |
| 1999 | 32.89 | 148 |
| 1998 | 31.25 | 152 |
| 1997 | 30.63 | 155 |
| 1996 | 29.48 | 155 |
| 1995 | 27.79 | 162 |
| 1994 | 29.92 | 151 |
| 1993 | 29.35 | 152 |
| 1992 | 28.59 | 155 |
| 1991 | 27.87 | 156 |