| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 37.35 | 146 |
| 2015 | 37.16 | 146 |
| 2014 | 36.98 | 146 |
| 2013 | 36.59 | 148 |
| 2012 | 35.82 | 150 |
| 2011 | 33.97 | 154 |
| 2010 | 33.45 | 156 |
| 2009 | 33.14 | 157 |
| 2008 | 32.85 | 156 |
| 2007 | 31.88 | 157 |
| 2006 | 30.51 | 159 |
| 2005 | 30.3 | 159 |
| 2004 | 28.98 | 162 |
| 2003 | 30.44 | 159 |
| 2002 | 30.99 | 159 |
| 2001 | 29.63 | 160 |
| 2000 | 30.61 | 159 |
| 1999 | 30.11 | 160 |
| 1998 | 29.6 | 160 |
| 1997 | 29.25 | 160 |
| 1996 | 28.98 | 161 |
| 1995 | 28.74 | 160 |
| 1994 | 28.64 | 159 |
| 1993 | 28.74 | 158 |
| 1992 | 28.52 | 158 |
| 1991 | 27.93 | 159 |
| 1990 | 27.13 | 160 |