| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 26.11 | 146 |
| 2015 | 22.86 | 177 |
| 2014 | 28.41 | 181 |
| 2013 | 29.33 | 185 |
| 2012 | 30.53 | 184 |
| 2011 | 35.21 | 183 |
| 2010 | 34.97 | 182 |
| 2009 | 34.06 | 181 |
| 2008 | 40.4 | 178 |
| 2007 | 40.95 | 176 |
| 2006 | 40.43 | 177 |
| 2005 | 40.57 | 173 |
| 2004 | 40.69 | 171 |
| 2003 | 40.64 | 169 |
| 2002 | 41.75 | 162 |
| 2001 | 21.85 | 179 |
| 2000 | 22.62 | 179 |
| 1999 | 21.38 | 178 |
| 1998 | 23.35 | 176 |
| 1997 | 23.34 | 176 |
| 1996 | 21.51 | 176 |
| 1995 | 19.77 | 174 |
| 1994 | 18.13 | 170 |
| 1993 | 16.22 | 164 |
| 1992 | 14.73 | 165 |
| 1991 | 13.75 | 163 |
| 1990 | 14.99 | 158 |
| 1989 | 19.64 | 137 |
| 1988 | 15.74 | 137 |
| 1987 | 15.45 | 138 |
| 1986 | 14.49 | 135 |