| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 89.65 | 180 |
| 2015 | 91.05 | 181 |
| 2014 | 92.23 | 181 |
| 2013 | 93.53 | 180 |
| 2012 | 94.86 | 183 |
| 2011 | 95.92 | 185 |
| 2010 | 96.52 | 185 |
| 2009 | 97.18 | 186 |
| 2008 | 97.56 | 185 |
| 2007 | 97.74 | 185 |
| 2006 | 97.91 | 185 |
| 2005 | 98.18 | 185 |
| 2004 | 98.53 | 186 |
| 2003 | 98.94 | 185 |
| 2002 | 99.28 | 184 |
| 2001 | 99.31 | 184 |
| 2000 | 98.85 | 183 |
| 1999 | 98.87 | 182 |
| 1998 | 98.48 | 181 |
| 1997 | 97.82 | 181 |
| 1996 | 97.11 | 175 |
| 1995 | 96.39 | 173 |
| 1994 | 95.71 | 169 |
| 1993 | 95.41 | 166 |
| 1992 | 95.19 | 161 |
| 1991 | 94.64 | 162 |
| 1990 | 93.56 | 157 |
| 1989 | 95.69 | 159 |
| 1988 | 97.24 | 161 |
| 1987 | 98.39 | 165 |
| 1986 | 99.4 | 174 |