| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 60.11 | 142 |
| 2015 | 59.88 | 141 |
| 2014 | 60.6 | 140 |
| 2013 | 61.34 | 141 |
| 2012 | 62.11 | 141 |
| 2011 | 62.93 | 141 |
| 2010 | 63.77 | 141 |
| 2009 | 64.8 | 140 |
| 2008 | 65.96 | 140 |
| 2007 | 67.25 | 141 |
| 2006 | 68.68 | 142 |
| 2005 | 70.27 | 143 |
| 2004 | 71.45 | 143 |
| 2003 | 72.72 | 144 |
| 2002 | 74.02 | 144 |
| 2001 | 75.26 | 144 |
| 2000 | 76.35 | 147 |
| 1999 | 77.29 | 144 |
| 1998 | 78.11 | 144 |
| 1997 | 78.79 | 142 |
| 1996 | 79.31 | 142 |
| 1995 | 79.66 | 137 |
| 1994 | 79.97 | 132 |
| 1993 | 80.08 | 130 |
| 1992 | 80 | 128 |
| 1991 | 79.74 | 127 |
| 1990 | 79.29 | 126 |
| 1989 | 79 | 125 |
| 1988 | 78.57 | 123 |
| 1987 | 78.01 | 122 |
| 1986 | 77.3 | 118 |