| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 37.79 | 139 |
| 2015 | 38.24 | 148 |
| 2014 | 41.31 | 150 |
| 2013 | 48.19 | 132 |
| 2012 | 46.99 | 136 |
| 2011 | 47.12 | 144 |
| 2010 | 44.48 | 140 |
| 2009 | 40.32 | 149 |
| 2008 | 47.68 | 144 |
| 2007 | 52.54 | 130 |
| 2006 | 46.42 | 143 |
| 2005 | 51.17 | 125 |
| 2004 | 44.24 | 142 |
| 2003 | 50.1 | 113 |
| 2002 | 43.91 | 131 |
| 2001 | 49 | 114 |
| 2000 | 55.19 | 97 |
| 1999 | 49.38 | 105 |
| 1998 | 52.7 | 94 |
| 1997 | 49.98 | 107 |
| 1996 | 46.88 | 113 |
| 1995 | 42.67 | 126 |
| 1994 | 43.68 | 105 |
| 1993 | 44.54 | 91 |
| 1992 | 40.95 | 102 |
| 1991 | 47.88 | 73 |
| 1990 | 47.47 | 84 |
| 1989 | 47.51 | 81 |
| 1988 | 52.89 | 62 |
| 1987 | 56.28 | 52 |
| 1986 | 61.3 | 43 |