| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 26.91 | 169 |
| 2015 | 26.8 | 169 |
| 2014 | 26.69 | 170 |
| 2013 | 26.8 | 169 |
| 2012 | 26.83 | 169 |
| 2011 | 27.69 | 168 |
| 2010 | 28.58 | 167 |
| 2009 | 30.11 | 165 |
| 2008 | 31.7 | 165 |
| 2007 | 33.34 | 161 |
| 2006 | 35.03 | 159 |
| 2005 | 36.78 | 155 |
| 2004 | 36.17 | 156 |
| 2003 | 35.57 | 156 |
| 2002 | 34.97 | 158 |
| 2001 | 34.39 | 159 |
| 2000 | 33.82 | 159 |
| 1999 | 34.12 | 158 |
| 1998 | 34.44 | 158 |
| 1997 | 34.76 | 155 |
| 1996 | 35.08 | 150 |
| 1995 | 35.41 | 149 |
| 1994 | 35.72 | 147 |
| 1993 | 35.49 | 147 |
| 1992 | 35.26 | 145 |
| 1991 | 35.03 | 146 |
| 1990 | 34.82 | 147 |