| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 11.22 | 139 |
| 2015 | 11 | 136 |
| 2014 | 10.6 | 132 |
| 2013 | 9.82 | 123 |
| 2012 | 10.97 | 132 |
| 2011 | 10 | 124 |
| 2010 | 9.96 | 127 |
| 2009 | 10.16 | 134 |
| 2008 | 11.3 | 150 |
| 2007 | 13.8 | 160 |
| 2006 | 12.3 | 149 |
| 2005 | 15.3 | 156 |
| 2004 | 17.7 | 164 |
| 2003 | 23.7 | 178 |
| 2002 | 25.9 | 180 |
| 2001 | 27.3 | 180 |
| 2000 | 29.77 | 183 |
| 1999 | 25.94 | 182 |
| 1998 | 25.67 | 182 |
| 1997 | 25.43 | 182 |
| 1996 | 29.34 | 183 |
| 1995 | 27.9 | 182 |
| 1994 | 24.4 | 181 |
| 1993 | 23.2 | 177 |
| 1992 | 23 | 179 |
| 1991 | 20.6 | 176 |