| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 48.81 | 104 |
| 2015 | 49.73 | 113 |
| 2014 | 50.81 | 121 |
| 2013 | 48.88 | 128 |
| 2012 | 46.47 | 140 |
| 2011 | 45.44 | 150 |
| 2010 | 42.76 | 145 |
| 2009 | 49.72 | 117 |
| 2008 | 54.08 | 131 |
| 2007 | 52.74 | 129 |
| 2006 | 50.56 | 135 |
| 2005 | 50.82 | 128 |
| 2004 | 61.22 | 88 |
| 2003 | 39.47 | 147 |
| 2002 | 25.3 | 175 |
| 2001 | 45.17 | 128 |
| 2000 | 49.54 | 113 |
| 1999 | 35.67 | 145 |
| 1998 | 32.93 | 153 |
| 1997 | 34.13 | 150 |
| 1996 | 28.49 | 162 |
| 1995 | 35.92 | 145 |
| 1994 | 33.46 | 140 |
| 1993 | 25.19 | 141 |
| 1992 | 26.38 | 141 |
| 1991 | 29.44 | 126 |
| 1990 | 31.48 | 125 |
| 1989 | 26.34 | 133 |
| 1988 | 25.96 | 129 |
| 1987 | 24.67 | 132 |
| 1986 | 20.5 | 134 |