| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 41.33 | 101 |
| 2015 | 41.43 | 99 |
| 2014 | 41.58 | 99 |
| 2013 | 41.96 | 99 |
| 2012 | 42.57 | 102 |
| 2011 | 43.26 | 102 |
| 2010 | 43.9 | 103 |
| 2009 | 45.13 | 104 |
| 2008 | 46.54 | 106 |
| 2007 | 48.16 | 107 |
| 2006 | 50.01 | 110 |
| 2005 | 52.1 | 112 |
| 2004 | 54.37 | 114 |
| 2003 | 56.76 | 114 |
| 2002 | 59.18 | 115 |
| 2001 | 61.63 | 117 |
| 2000 | 64.12 | 119 |
| 1999 | 66.29 | 120 |
| 1998 | 68.29 | 121 |
| 1997 | 70.08 | 121 |
| 1996 | 71.55 | 120 |
| 1995 | 72.64 | 123 |
| 1994 | 73.42 | 121 |
| 1993 | 73.84 | 119 |
| 1992 | 73.99 | 117 |
| 1991 | 73.92 | 118 |
| 1990 | 73.66 | 117 |
| 1989 | 73.69 | 114 |
| 1988 | 73.67 | 112 |
| 1987 | 73.58 | 110 |
| 1986 | 73.41 | 110 |