| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 37.44 | 113 |
| 2015 | 37.33 | 113 |
| 2014 | 37.19 | 112 |
| 2013 | 37.03 | 114 |
| 2012 | 36.84 | 115 |
| 2011 | 36.63 | 120 |
| 2010 | 36.42 | 121 |
| 2009 | 36.21 | 122 |
| 2008 | 36 | 122 |
| 2007 | 35.88 | 122 |
| 2006 | 35.85 | 124 |
| 2005 | 35.82 | 126 |
| 2004 | 35.78 | 127 |
| 2003 | 35.75 | 128 |
| 2002 | 35.72 | 131 |
| 2001 | 35.62 | 131 |
| 2000 | 35.33 | 133 |
| 1999 | 35.05 | 134 |
| 1998 | 34.77 | 135 |
| 1997 | 34.5 | 135 |
| 1996 | 34.22 | 135 |
| 1995 | 33.94 | 136 |
| 1994 | 33.67 | 137 |
| 1993 | 33.39 | 138 |
| 1992 | 33.12 | 141 |
| 1991 | 32.85 | 143 |
| 1990 | 32.58 | 145 |
| 1989 | 32.31 | 145 |
| 1988 | 32.29 | 147 |
| 1987 | 32.5 | 147 |
| 1986 | 32.7 | 151 |