| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 1.32 | 56 |
| 2015 | 1.38 | 56 |
| 2014 | 1.43 | 54 |
| 2013 | 1.46 | 54 |
| 2012 | 1.44 | 56 |
| 2011 | 1.4 | 60 |
| 2010 | 1.34 | 65 |
| 2009 | 1.29 | 67 |
| 2008 | 1.25 | 74 |
| 2007 | 1.23 | 72 |
| 2006 | 1.24 | 76 |
| 2005 | 1.26 | 70 |
| 2004 | 1.26 | 70 |
| 2003 | 1.28 | 66 |
| 2002 | 1.32 | 69 |
| 2001 | 1.37 | 66 |
| 2000 | 1.45 | 64 |
| 1999 | 1.54 | 62 |
| 1998 | 1.58 | 62 |
| 1997 | 1.57 | 65 |
| 1996 | 1.51 | 73 |
| 1995 | 1.43 | 70 |
| 1994 | 1.35 | 76 |
| 1993 | 1.3 | 79 |
| 1992 | 1.3 | 78 |
| 1991 | 1.34 | 79 |
| 1990 | 1.39 | 75 |
| 1989 | 1.43 | 82 |
| 1988 | 0.32 | 126 |
| 1987 | 0.09 | 136 |
| 1986 | 0.23 | 132 |