| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 57.56 | 138 |
| 2015 | 57.89 | 138 |
| 2014 | 58.37 | 138 |
| 2013 | 58.99 | 138 |
| 2012 | 59.71 | 138 |
| 2011 | 60.39 | 136 |
| 2010 | 60.92 | 136 |
| 2009 | 61.85 | 134 |
| 2008 | 62.74 | 134 |
| 2007 | 63.66 | 134 |
| 2006 | 64.79 | 133 |
| 2005 | 66.25 | 133 |
| 2004 | 67.89 | 132 |
| 2003 | 69.77 | 134 |
| 2002 | 71.74 | 139 |
| 2001 | 73.54 | 140 |
| 2000 | 74.98 | 139 |
| 1999 | 76.5 | 141 |
| 1998 | 77.68 | 143 |
| 1997 | 78.57 | 141 |
| 1996 | 79.33 | 143 |
| 1995 | 80.08 | 142 |
| 1994 | 80.65 | 136 |
| 1993 | 81.12 | 135 |
| 1992 | 81.44 | 134 |
| 1991 | 81.45 | 129 |
| 1990 | 81.01 | 127 |
| 1989 | 81.07 | 127 |
| 1988 | 80.85 | 127 |
| 1987 | 80.45 | 126 |
| 1986 | 80.01 | 127 |