| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 54.741 | 91 |
| 2015 | 51.892 | 125 |
| 2014 | 51.128 | 126 |
| 2013 | 49.21 | 137 |
| 2012 | 48.756 | 137 |
| 2011 | 43.346 | 148 |
| 2010 | 43.817 | 148 |
| 2009 | 45.28 | 144 |
| 2008 | 38.054 | 154 |
| 2007 | 35.809 | 161 |
| 2006 | 34.891 | 163 |
| 2005 | 33.809 | 164 |
| 2004 | 34.217 | 163 |
| 2003 | 34.331 | 163 |
| 2002 | 35.062 | 161 |
| 2001 | 35.265 | 159 |
| 2000 | 35.47 | 152 |
| 1999 | 38.339 | 141 |
| 1998 | 35.249 | 149 |
| 1997 | 34.831 | 146 |
| 1996 | 30.588 | 149 |
| 1995 | 25.758 | 153 |
| 1994 | 18.151 | 142 |
| 1993 | 21.685 | 135 |
| 1992 | 29.557 | 120 |
| 1991 | 25.783 | 127 |
| 1990 | 30.668 | 114 |