| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 1.62 | 57 |
| 2015 | 1.5 | 72 |
| 2014 | 1.47 | 76 |
| 2013 | 1.41 | 77 |
| 2012 | 1.4 | 78 |
| 2011 | 1.45 | 73 |
| 2010 | 1.52 | 72 |
| 2009 | 1.6 | 73 |
| 2008 | 1.38 | 92 |
| 2007 | 1.47 | 83 |
| 2006 | 1.45 | 87 |
| 2005 | 1.58 | 80 |
| 2004 | 1.85 | 71 |
| 2003 | 1.97 | 66 |
| 2002 | 2.08 | 63 |
| 2001 | 1.7 | 76 |
| 2000 | 1.71 | 73 |
| 1999 | 2.04 | 57 |
| 1998 | 2.16 | 57 |
| 1997 | 2.02 | 65 |
| 1996 | 2.16 | 56 |
| 1995 | 2.31 | 54 |
| 1994 | 2.68 | 44 |
| 1993 | 2.63 | 52 |
| 1992 | 2.91 | 44 |
| 1991 | 2.7 | 54 |
| 1990 | 2.83 | 53 |
| 1989 | 2.86 | 48 |
| 1988 | 2.84 | 49 |
| 1987 | 2.92 | 52 |
| 1986 | 2.76 | 48 |