| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 75.55 | 165 |
| 2015 | 76.17 | 165 |
| 2014 | 76.75 | 164 |
| 2013 | 77.18 | 162 |
| 2012 | 77.45 | 162 |
| 2011 | 77.6 | 163 |
| 2010 | 77.65 | 163 |
| 2009 | 77.8 | 160 |
| 2008 | 77.9 | 160 |
| 2007 | 77.98 | 160 |
| 2006 | 78.01 | 160 |
| 2005 | 77.96 | 160 |
| 2004 | 78.43 | 160 |
| 2003 | 78.96 | 158 |
| 2002 | 79.55 | 156 |
| 2001 | 80.14 | 156 |
| 2000 | 80.71 | 155 |
| 1999 | 82.18 | 157 |
| 1998 | 83.67 | 158 |
| 1997 | 85.18 | 159 |
| 1996 | 86.74 | 163 |
| 1995 | 88.34 | 168 |
| 1994 | 89.19 | 167 |
| 1993 | 90 | 169 |
| 1992 | 90.66 | 170 |
| 1991 | 91.03 | 170 |
| 1990 | 91 | 169 |
| 1989 | 91.81 | 171 |
| 1988 | 92.32 | 173 |
| 1987 | 92.55 | 171 |
| 1986 | 92.53 | 171 |