| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 22.71 | 119 |
| 2015 | 21.8 | 140 |
| 2014 | 21.85 | 138 |
| 2013 | 22.18 | 139 |
| 2012 | 23.41 | 138 |
| 2011 | 24.39 | 138 |
| 2010 | 27.54 | 131 |
| 2009 | 26.41 | 133 |
| 2008 | 25.26 | 130 |
| 2007 | 24.62 | 133 |
| 2006 | 26.28 | 121 |
| 2005 | 23.22 | 127 |
| 2004 | 22.33 | 130 |
| 2003 | 24.02 | 124 |
| 2002 | 21.25 | 126 |
| 2001 | 17.23 | 136 |
| 2000 | 17.39 | 134 |
| 1999 | 20.47 | 116 |
| 1998 | 15.79 | 134 |
| 1997 | 18.59 | 125 |
| 1996 | 22.33 | 108 |
| 1995 | 19.8 | 116 |
| 1994 | 23.01 | 109 |
| 1993 | 17.73 | 127 |
| 1992 | 16.91 | 120 |
| 1991 | 17.04 | 117 |
| 1990 | 15.78 | 116 |
| 1989 | 15.74 | 115 |
| 1988 | 15.39 | 113 |
| 1987 | 14.46 | 114 |
| 1986 | 14.49 | 112 |