| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 1.06 | 69 |
| 2015 | 1.11 | 67 |
| 2014 | 1.15 | 65 |
| 2013 | 1.2 | 65 |
| 2012 | 1.24 | 64 |
| 2011 | 1.28 | 63 |
| 2010 | 1.31 | 66 |
| 2009 | 1.34 | 65 |
| 2008 | 1.38 | 67 |
| 2007 | 1.42 | 65 |
| 2006 | 1.47 | 63 |
| 2005 | 1.53 | 58 |
| 2004 | 1.57 | 55 |
| 2003 | 1.6 | 56 |
| 2002 | 1.61 | 60 |
| 2001 | 1.59 | 57 |
| 2000 | 1.55 | 59 |
| 1999 | 1.52 | 63 |
| 1998 | 1.51 | 67 |
| 1997 | 1.52 | 66 |
| 1996 | 1.55 | 68 |
| 1995 | 1.59 | 64 |
| 1994 | 1.63 | 63 |
| 1993 | 1.66 | 65 |
| 1992 | 1.66 | 63 |
| 1991 | 1.67 | 66 |
| 1990 | 1.66 | 64 |
| 1989 | 1.66 | 73 |
| 1988 | 1.67 | 66 |
| 1987 | 1.7 | 69 |
| 1986 | 1.74 | 67 |