| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 4.61 | 47 |
| 2015 | 4.59 | 48 |
| 2014 | 4.59 | 47 |
| 2013 | 4.54 | 49 |
| 2012 | 4.47 | 48 |
| 2011 | 4.34 | 44 |
| 2010 | 4.2 | 37 |
| 2009 | 4.29 | 38 |
| 2008 | 4.36 | 50 |
| 2007 | 3.76 | 39 |
| 2006 | 4 | 41 |
| 2005 | 4.14 | 33 |
| 2004 | 4.3 | 39 |
| 2003 | 4.3 | 39 |
| 2002 | 4.41 | 42 |
| 2001 | 4.53 | 45 |
| 2000 | 4.53 | 44 |
| 1999 | 4.7 | 45 |
| 1998 | 4.73 | 47 |
| 1997 | 4.6 | 43 |
| 1996 | 4.59 | 43 |
| 1995 | 4.55 | 45 |
| 1994 | 4.34 | 46 |
| 1993 | 4.33 | 49 |
| 1992 | 4.39 | 49 |
| 1991 | 4.89 | 54 |