| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 39.81 | 134 |
| 2015 | 42.2 | 161 |
| 2014 | 49.01 | 161 |
| 2013 | 53.84 | 155 |
| 2012 | 55.79 | 154 |
| 2011 | 55.62 | 156 |
| 2010 | 49.69 | 161 |
| 2009 | 46.78 | 163 |
| 2008 | 53.76 | 162 |
| 2007 | 46.16 | 171 |
| 2006 | 46.59 | 166 |
| 2005 | 42.49 | 170 |
| 2004 | 37.91 | 173 |
| 2003 | 30.92 | 180 |
| 2002 | 29.83 | 179 |
| 2001 | 26.27 | 175 |
| 2000 | 27.19 | 174 |
| 1999 | 25.08 | 174 |
| 1998 | 23.96 | 175 |
| 1997 | 22.86 | 177 |
| 1996 | 22.17 | 174 |
| 1995 | 23.12 | 172 |
| 1994 | 20.3 | 168 |
| 1993 | 19.86 | 162 |
| 1992 | 18.63 | 163 |
| 1991 | 17.17 | 160 |
| 1990 | 15.67 | 155 |
| 1989 | 15.33 | 141 |
| 1988 | 13.64 | 138 |
| 1987 | 12.72 | 139 |
| 1986 | 12.35 | 138 |