| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 1.69 | 43 |
| 2015 | 1.74 | 40 |
| 2014 | 1.8 | 38 |
| 2013 | 1.85 | 38 |
| 2012 | 1.88 | 38 |
| 2011 | 1.91 | 41 |
| 2010 | 1.93 | 43 |
| 2009 | 1.96 | 44 |
| 2008 | 1.96 | 45 |
| 2007 | 1.97 | 46 |
| 2006 | 1.96 | 47 |
| 2005 | 1.94 | 46 |
| 2004 | 1.92 | 45 |
| 2003 | 1.94 | 46 |
| 2002 | 2.01 | 41 |
| 2001 | 2.13 | 37 |
| 2000 | 2.29 | 32 |
| 1999 | 2.43 | 28 |
| 1998 | 2.49 | 26 |
| 1997 | 2.42 | 30 |
| 1996 | 2.24 | 38 |
| 1995 | 2 | 49 |
| 1994 | 1.79 | 57 |
| 1993 | 1.68 | 63 |
| 1992 | 1.73 | 60 |
| 1991 | 1.9 | 56 |
| 1990 | 2.11 | 47 |
| 1989 | 2.31 | 41 |
| 1988 | 2.5 | 35 |
| 1987 | 2.67 | 32 |
| 1986 | 2.81 | 27 |