| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 70.63 | 155 |
| 2015 | 71.02 | 155 |
| 2014 | 71.67 | 155 |
| 2013 | 72.28 | 154 |
| 2012 | 72.85 | 154 |
| 2011 | 73.41 | 154 |
| 2010 | 73.94 | 154 |
| 2009 | 74.54 | 154 |
| 2008 | 75.15 | 157 |
| 2007 | 75.74 | 158 |
| 2006 | 76.31 | 156 |
| 2005 | 76.84 | 155 |
| 2004 | 77.59 | 156 |
| 2003 | 78.35 | 155 |
| 2002 | 79.08 | 155 |
| 2001 | 79.75 | 153 |
| 2000 | 80.33 | 153 |
| 1999 | 81.23 | 153 |
| 1998 | 82.08 | 154 |
| 1997 | 82.89 | 152 |
| 1996 | 83.66 | 152 |
| 1995 | 84.36 | 152 |
| 1994 | 84.82 | 152 |
| 1993 | 85.22 | 151 |
| 1992 | 85.55 | 151 |
| 1991 | 85.77 | 149 |
| 1990 | 85.83 | 147 |
| 1989 | 86.16 | 147 |
| 1988 | 86.4 | 145 |
| 1987 | 86.54 | 145 |
| 1986 | 86.56 | 144 |