| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 57.23 | 137 |
| 2015 | 57.05 | 137 |
| 2014 | 57.07 | 136 |
| 2013 | 57.35 | 135 |
| 2012 | 57.86 | 132 |
| 2011 | 58.39 | 131 |
| 2010 | 58.76 | 130 |
| 2009 | 59.81 | 130 |
| 2008 | 60.85 | 131 |
| 2007 | 62 | 130 |
| 2006 | 63.55 | 130 |
| 2005 | 65.71 | 131 |
| 2004 | 67.94 | 133 |
| 2003 | 70.66 | 139 |
| 2002 | 73.66 | 143 |
| 2001 | 76.52 | 148 |
| 2000 | 78.93 | 150 |
| 1999 | 80.92 | 151 |
| 1998 | 82.44 | 155 |
| 1997 | 83.52 | 156 |
| 1996 | 84.44 | 156 |
| 1995 | 85.37 | 159 |
| 1994 | 85.67 | 155 |
| 1993 | 85.73 | 154 |
| 1992 | 85.49 | 149 |
| 1991 | 84.84 | 145 |
| 1990 | 83.7 | 141 |
| 1989 | 83.36 | 137 |
| 1988 | 82.82 | 132 |
| 1987 | 82.19 | 132 |
| 1986 | 81.52 | 130 |