| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 66.33 | 91 |
| 2015 | 69.35 | 112 |
| 2014 | 68.82 | 123 |
| 2013 | 67.7 | 129 |
| 2012 | 68.31 | 129 |
| 2011 | 69.83 | 130 |
| 2010 | 68.41 | 125 |
| 2009 | 67.13 | 123 |
| 2008 | 74.94 | 126 |
| 2007 | 73.19 | 126 |
| 2006 | 72.39 | 122 |
| 2005 | 70.85 | 120 |
| 2004 | 69.05 | 127 |
| 2003 | 66.58 | 120 |
| 2002 | 67.65 | 112 |
| 2001 | 73.27 | 97 |
| 2000 | 74.62 | 95 |
| 1999 | 70.01 | 94 |
| 1998 | 72.02 | 95 |
| 1997 | 73.06 | 96 |
| 1996 | 71.12 | 89 |
| 1995 | 68.33 | 98 |
| 1994 | 68.73 | 85 |
| 1993 | 68.05 | 77 |
| 1992 | 67.67 | 76 |
| 1991 | 70.68 | 68 |
| 1990 | 72.59 | 63 |
| 1989 | 71.16 | 60 |
| 1988 | 65.51 | 62 |
| 1987 | 65.73 | 57 |
| 1986 | 70.56 | 55 |