| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 91.71 | 188 |
| 2015 | 92.14 | 188 |
| 2014 | 92.93 | 188 |
| 2013 | 93.88 | 189 |
| 2012 | 94.86 | 189 |
| 2011 | 95.6 | 190 |
| 2010 | 95.89 | 191 |
| 2009 | 96.61 | 191 |
| 2008 | 96.95 | 191 |
| 2007 | 96.96 | 191 |
| 2006 | 96.85 | 190 |
| 2005 | 96.77 | 190 |
| 2004 | 96.64 | 190 |
| 2003 | 96.47 | 189 |
| 2002 | 96.13 | 188 |
| 2001 | 95.33 | 187 |
| 2000 | 93.91 | 185 |
| 1999 | 92.97 | 182 |
| 1998 | 91.67 | 181 |
| 1997 | 90.18 | 176 |
| 1996 | 88.71 | 169 |
| 1995 | 87.24 | 164 |
| 1994 | 86.25 | 159 |
| 1993 | 85.63 | 153 |
| 1992 | 85.1 | 146 |
| 1991 | 84.4 | 144 |
| 1990 | 83.43 | 139 |
| 1989 | 83.29 | 136 |
| 1988 | 82.97 | 133 |
| 1987 | 82.6 | 133 |
| 1986 | 82.26 | 132 |