| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 4.58 | 46 |
| 2015 | 4.55 | 47 |
| 2014 | 4.54 | 46 |
| 2013 | 4.39 | 47 |
| 2012 | 4.19 | 45 |
| 2011 | 4.04 | 38 |
| 2010 | 4.54 | 44 |
| 2009 | 4.12 | 34 |
| 2008 | 3.35 | 35 |
| 2007 | 3.65 | 35 |
| 2006 | 4 | 42 |
| 2005 | 4.44 | 42 |
| 2004 | 4.32 | 41 |
| 2003 | 4.12 | 36 |
| 2002 | 2.92 | 21 |
| 2001 | 2.49 | 19 |
| 2000 | 2.67 | 22 |
| 1999 | 3.14 | 26 |
| 1998 | 3.6 | 33 |
| 1997 | 4.2 | 40 |
| 1996 | 3.7 | 33 |
| 1995 | 3.33 | 31 |
| 1994 | 3.88 | 39 |
| 1993 | 3.72 | 38 |
| 1992 | 2.81 | 25 |
| 1991 | 1.78 | 14 |