| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 47 | 102 |
| 2015 | 47.16 | 98 |
| 2014 | 47.09 | 96 |
| 2013 | 46.31 | 97 |
| 2012 | 45.02 | 110 |
| 2011 | 44.45 | 109 |
| 2010 | 42.25 | 120 |
| 2009 | 38.01 | 139 |
| 2008 | 38.13 | 139 |
| 2007 | 36.58 | 143 |
| 2006 | 35.31 | 144 |
| 2005 | 34.45 | 145 |
| 2004 | 33.35 | 152 |
| 2003 | 32.31 | 157 |
| 2002 | 31.15 | 157 |
| 2001 | 31.23 | 156 |
| 2000 | 31.8 | 157 |
| 1999 | 31.64 | 152 |
| 1998 | 32.6 | 149 |
| 1997 | 32.28 | 149 |
| 1996 | 31.35 | 150 |
| 1995 | 32.6 | 144 |
| 1994 | 33.07 | 139 |
| 1993 | 33.71 | 135 |
| 1992 | 32.05 | 140 |
| 1991 | 30.04 | 150 |