| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 93.02 | 186 |
| 2015 | 93.43 | 185 |
| 2014 | 93.76 | 185 |
| 2013 | 93.85 | 182 |
| 2012 | 93.77 | 179 |
| 2011 | 93.65 | 180 |
| 2010 | 93.54 | 180 |
| 2009 | 93.53 | 180 |
| 2008 | 93.57 | 179 |
| 2007 | 93.61 | 179 |
| 2006 | 93.49 | 178 |
| 2005 | 93.1 | 176 |
| 2004 | 92.89 | 175 |
| 2003 | 92.59 | 175 |
| 2002 | 92.28 | 173 |
| 2001 | 92.07 | 171 |
| 2000 | 92.04 | 168 |
| 1999 | 92.43 | 166 |
| 1998 | 92.89 | 167 |
| 1997 | 93.31 | 167 |
| 1996 | 93.56 | 166 |
| 1995 | 93.54 | 165 |
| 1994 | 94.24 | 165 |
| 1993 | 94.75 | 165 |
| 1992 | 95.08 | 160 |
| 1991 | 95.24 | 163 |
| 1990 | 95.18 | 161 |
| 1989 | 95.69 | 158 |
| 1988 | 96.11 | 157 |
| 1987 | 96.4 | 157 |
| 1986 | 96.5 | 158 |