| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 38.05 | 138 |
| 2015 | 38.14 | 149 |
| 2014 | 40.73 | 153 |
| 2013 | 43 | 149 |
| 2012 | 46.69 | 139 |
| 2011 | 48.98 | 135 |
| 2010 | 44.62 | 139 |
| 2009 | 40.37 | 148 |
| 2008 | 50.58 | 137 |
| 2007 | 47.43 | 141 |
| 2006 | 44.16 | 151 |
| 2005 | 39.27 | 162 |
| 2004 | 34.31 | 166 |
| 2003 | 29.8 | 171 |
| 2002 | 27.76 | 168 |
| 2001 | 27.54 | 167 |
| 2000 | 27.91 | 168 |
| 1999 | 25.78 | 171 |
| 1998 | 25.18 | 170 |
| 1997 | 26.53 | 166 |
| 1996 | 25.06 | 169 |
| 1995 | 24.68 | 172 |
| 1994 | 22.68 | 166 |
| 1993 | 22.03 | 150 |
| 1992 | 20.61 | 148 |
| 1991 | 17.71 | 145 |
| 1990 | 22.2 | 143 |
| 1989 | 24.43 | 135 |
| 1988 | 37.63 | 99 |
| 1987 | 27.36 | 125 |
| 1986 | 32.29 | 109 |