| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 10.72 | 109 |
| 2015 | 10.58 | 110 |
| 2014 | 10.43 | 111 |
| 2013 | 10.32 | 111 |
| 2012 | 10.23 | 110 |
| 2011 | 10.14 | 112 |
| 2010 | 10.03 | 113 |
| 2009 | 9.89 | 111 |
| 2008 | 9.74 | 111 |
| 2007 | 9.58 | 109 |
| 2006 | 9.43 | 107 |
| 2005 | 9.3 | 104 |
| 2004 | 9.19 | 104 |
| 2003 | 9.12 | 104 |
| 2002 | 9.06 | 103 |
| 2001 | 9.01 | 106 |
| 2000 | 8.94 | 107 |
| 1999 | 8.91 | 110 |
| 1998 | 8.86 | 111 |
| 1997 | 8.81 | 112 |
| 1996 | 8.74 | 114 |
| 1995 | 8.67 | 114 |
| 1994 | 8.58 | 114 |
| 1993 | 8.47 | 115 |
| 1992 | 8.35 | 114 |
| 1991 | 8.23 | 115 |
| 1990 | 8.11 | 115 |
| 1989 | 7.96 | 114 |
| 1988 | 7.83 | 111 |
| 1987 | 7.7 | 107 |
| 1986 | 7.58 | 104 |