| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 80.64 | 164 |
| 2015 | 81.22 | 163 |
| 2014 | 81.8 | 163 |
| 2013 | 82.22 | 162 |
| 2012 | 82.47 | 162 |
| 2011 | 82.6 | 161 |
| 2010 | 82.61 | 163 |
| 2009 | 82.78 | 160 |
| 2008 | 82.91 | 160 |
| 2007 | 83.01 | 159 |
| 2006 | 83.05 | 159 |
| 2005 | 83 | 158 |
| 2004 | 83.52 | 156 |
| 2003 | 84.12 | 154 |
| 2002 | 84.76 | 151 |
| 2001 | 85.39 | 150 |
| 2000 | 86 | 151 |
| 1999 | 87.57 | 154 |
| 1998 | 89.17 | 156 |
| 1997 | 90.79 | 157 |
| 1996 | 92.44 | 163 |
| 1995 | 94.12 | 167 |
| 1994 | 95.01 | 166 |
| 1993 | 95.85 | 167 |
| 1992 | 96.53 | 170 |
| 1991 | 96.89 | 168 |
| 1990 | 96.85 | 166 |
| 1989 | 97.68 | 167 |
| 1988 | 98.21 | 167 |
| 1987 | 98.44 | 166 |
| 1986 | 98.41 | 168 |