| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 14.86 | 159 |
| 2015 | 14.54 | 156 |
| 2014 | 14.03 | 154 |
| 2013 | 14.04 | 149 |
| 2012 | 14.02 | 149 |
| 2011 | 13.96 | 149 |
| 2010 | 13.93 | 152 |
| 2009 | 13.97 | 155 |
| 2008 | 15.51 | 165 |
| 2007 | 18.04 | 169 |
| 2006 | 17 | 167 |
| 2005 | 16.7 | 163 |
| 2004 | 16.31 | 161 |
| 2003 | 16.56 | 160 |
| 2002 | 15.25 | 153 |
| 2001 | 13.46 | 146 |
| 2000 | 14.32 | 151 |
| 1999 | 16.22 | 162 |
| 1998 | 17.23 | 163 |
| 1997 | 17.92 | 166 |
| 1996 | 18.6 | 168 |
| 1995 | 18.35 | 166 |
| 1994 | 18.11 | 161 |
| 1993 | 17.8 | 160 |
| 1992 | 17.44 | 160 |
| 1991 | 17.06 | 158 |