| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 73.38 | 151 |
| 2015 | 74.15 | 151 |
| 2014 | 74.58 | 150 |
| 2013 | 75.2 | 150 |
| 2012 | 75.91 | 151 |
| 2011 | 76.42 | 151 |
| 2010 | 76.5 | 150 |
| 2009 | 77.13 | 150 |
| 2008 | 77.76 | 149 |
| 2007 | 78.43 | 148 |
| 2006 | 79.13 | 149 |
| 2005 | 79.87 | 150 |
| 2004 | 80.29 | 147 |
| 2003 | 80.62 | 145 |
| 2002 | 80.95 | 145 |
| 2001 | 81.49 | 144 |
| 2000 | 82.47 | 145 |
| 1999 | 81.79 | 136 |
| 1998 | 81.34 | 130 |
| 1997 | 81.15 | 127 |
| 1996 | 81.17 | 126 |
| 1995 | 81.37 | 126 |
| 1994 | 80.63 | 120 |
| 1993 | 79.92 | 116 |
| 1992 | 79.35 | 112 |
| 1991 | 79.07 | 112 |
| 1990 | 79.27 | 112 |
| 1989 | 80.19 | 112 |
| 1988 | 81.28 | 114 |
| 1987 | 82.34 | 114 |
| 1986 | 83.43 | 116 |