| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 89.25 | 178 |
| 2015 | 90.04 | 179 |
| 2014 | 89.61 | 178 |
| 2013 | 88.95 | 178 |
| 2012 | 88.05 | 174 |
| 2011 | 86.93 | 172 |
| 2010 | 85.66 | 165 |
| 2009 | 85.94 | 165 |
| 2008 | 85.98 | 163 |
| 2007 | 85.8 | 163 |
| 2006 | 85.44 | 161 |
| 2005 | 84.9 | 160 |
| 2004 | 85.29 | 160 |
| 2003 | 85.57 | 160 |
| 2002 | 85.72 | 155 |
| 2001 | 85.65 | 152 |
| 2000 | 85.31 | 148 |
| 1999 | 86 | 147 |
| 1998 | 86.53 | 146 |
| 1997 | 86.88 | 145 |
| 1996 | 87.06 | 144 |
| 1995 | 87.07 | 139 |
| 1994 | 87.91 | 137 |
| 1993 | 88.61 | 136 |
| 1992 | 89.15 | 136 |
| 1991 | 89.46 | 138 |
| 1990 | 89.48 | 137 |
| 1989 | 89.27 | 134 |
| 1988 | 88.88 | 132 |
| 1987 | 88.31 | 131 |
| 1986 | 87.49 | 129 |