| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 16.05 | 161 |
| 2015 | 15.48 | 159 |
| 2014 | 14.98 | 157 |
| 2013 | 15.14 | 155 |
| 2012 | 15.27 | 159 |
| 2011 | 15.22 | 158 |
| 2010 | 15.24 | 159 |
| 2009 | 15.22 | 161 |
| 2008 | 15.34 | 164 |
| 2007 | 16.9 | 168 |
| 2006 | 17.5 | 168 |
| 2005 | 17.97 | 167 |
| 2004 | 26.8 | 182 |
| 2003 | 28.1 | 183 |
| 2002 | 16.78 | 160 |
| 2001 | 16.9 | 162 |
| 2000 | 17.03 | 165 |
| 1999 | 17.52 | 166 |
| 1998 | 17.76 | 167 |
| 1997 | 17.69 | 165 |
| 1996 | 18.16 | 166 |
| 1995 | 17.33 | 162 |
| 1994 | 17.58 | 158 |
| 1993 | 18.4 | 163 |
| 1992 | 18.15 | 166 |
| 1991 | 16.93 | 157 |