| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 81.83 | 176 |
| 2015 | 84.06 | 179 |
| 2014 | 86.67 | 181 |
| 2013 | 89.31 | 184 |
| 2012 | 91.86 | 187 |
| 2011 | 94.09 | 188 |
| 2010 | 95.79 | 190 |
| 2009 | 96.17 | 190 |
| 2008 | 96.14 | 190 |
| 2007 | 95.76 | 190 |
| 2006 | 95.21 | 189 |
| 2005 | 94.65 | 189 |
| 2004 | 95.77 | 189 |
| 2003 | 96.77 | 190 |
| 2002 | 97.68 | 190 |
| 2001 | 98.41 | 189 |
| 2000 | 98.75 | 189 |
| 1999 | 98.36 | 189 |
| 1998 | 97.95 | 190 |
| 1997 | 97.37 | 189 |
| 1996 | 96.61 | 188 |
| 1995 | 95.84 | 186 |
| 1994 | 96.28 | 186 |
| 1993 | 96.35 | 185 |
| 1992 | 96.36 | 183 |
| 1991 | 96.49 | 183 |
| 1990 | 96.57 | 185 |
| 1989 | 95.27 | 180 |
| 1988 | 94.75 | 179 |
| 1987 | 94.55 | 178 |
| 1986 | 94.25 | 177 |