| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 75.14 | 154 |
| 2015 | 75.55 | 153 |
| 2014 | 76.17 | 152 |
| 2013 | 76.79 | 152 |
| 2012 | 77.4 | 152 |
| 2011 | 77.99 | 152 |
| 2010 | 78.55 | 152 |
| 2009 | 79.36 | 153 |
| 2008 | 80.18 | 153 |
| 2007 | 81 | 155 |
| 2006 | 81.85 | 156 |
| 2005 | 82.71 | 157 |
| 2004 | 83.9 | 159 |
| 2003 | 85.15 | 158 |
| 2002 | 86.41 | 156 |
| 2001 | 87.63 | 159 |
| 2000 | 88.72 | 161 |
| 1999 | 90.11 | 162 |
| 1998 | 91.39 | 162 |
| 1997 | 92.54 | 164 |
| 1996 | 93.54 | 165 |
| 1995 | 94.38 | 168 |
| 1994 | 95.26 | 167 |
| 1993 | 95.9 | 168 |
| 1992 | 96.31 | 168 |
| 1991 | 96.49 | 166 |
| 1990 | 96.43 | 165 |
| 1989 | 96.5 | 162 |
| 1988 | 96.41 | 158 |
| 1987 | 96.16 | 154 |
| 1986 | 95.67 | 155 |