| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 39.44 | 136 |
| 2015 | 39.55 | 143 |
| 2014 | 42.46 | 144 |
| 2013 | 41.14 | 156 |
| 2012 | 40.2 | 161 |
| 2011 | 35.2 | 177 |
| 2010 | 31.69 | 176 |
| 2009 | 27.25 | 183 |
| 2008 | 33.56 | 180 |
| 2007 | 32.06 | 181 |
| 2006 | 30.87 | 183 |
| 2005 | 28.94 | 181 |
| 2004 | 28.3 | 182 |
| 2003 | 28.84 | 176 |
| 2002 | 27.29 | 169 |
| 2001 | 32.69 | 160 |
| 2000 | 34.76 | 154 |
| 1999 | 29.18 | 161 |
| 1998 | 28.5 | 163 |
| 1997 | 26.72 | 165 |
| 1996 | 27.39 | 167 |
| 1995 | 27 | 165 |
| 1994 | 26.51 | 162 |
| 1993 | 27.99 | 136 |
| 1992 | 28.16 | 133 |
| 1991 | 28.77 | 130 |
| 1990 | 28.48 | 133 |
| 1989 | 29.93 | 125 |
| 1988 | 23.28 | 135 |
| 1987 | 30.01 | 116 |
| 1986 | 30.15 | 114 |