| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 65.47 | 139 |
| 2015 | 66.09 | 139 |
| 2014 | 66.86 | 139 |
| 2013 | 67.44 | 139 |
| 2012 | 67.9 | 139 |
| 2011 | 68.27 | 139 |
| 2010 | 68.55 | 138 |
| 2009 | 68.72 | 134 |
| 2008 | 68.89 | 131 |
| 2007 | 69.1 | 130 |
| 2006 | 69.44 | 129 |
| 2005 | 69.91 | 128 |
| 2004 | 70.49 | 127 |
| 2003 | 71.35 | 127 |
| 2002 | 72.31 | 124 |
| 2001 | 73.21 | 123 |
| 2000 | 73.98 | 121 |
| 1999 | 74.78 | 121 |
| 1998 | 75.58 | 120 |
| 1997 | 76.34 | 119 |
| 1996 | 76.93 | 117 |
| 1995 | 77.28 | 116 |
| 1994 | 80.61 | 119 |
| 1993 | 83.96 | 126 |
| 1992 | 87.41 | 129 |
| 1991 | 91.28 | 147 |
| 1990 | 95.93 | 164 |
| 1989 | 97.06 | 164 |
| 1988 | 98.46 | 168 |
| 1987 | 100.09 | 177 |
| 1986 | 101.61 | 182 |