| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 3.19 | 51 |
| 2015 | 3.23 | 52 |
| 2014 | 3.26 | 50 |
| 2013 | 3.28 | 50 |
| 2012 | 3.3 | 53 |
| 2011 | 3.29 | 54 |
| 2010 | 3.19 | 57 |
| 2009 | 3.18 | 56 |
| 2008 | 3.17 | 62 |
| 2007 | 2.85 | 75 |
| 2006 | 2.85 | 75 |
| 2005 | 2.85 | 75 |
| 2004 | 2.85 | 73 |
| 2003 | 2.86 | 69 |
| 2002 | 2.86 | 73 |
| 2001 | 2.86 | 72 |
| 2000 | 2.86 | 69 |
| 1999 | 2.87 | 72 |
| 1998 | 3.03 | 71 |
| 1997 | 5.16 | 13 |
| 1996 | 5.17 | 11 |
| 1995 | 5.18 | 13 |
| 1994 | 5.19 | 14 |
| 1993 | 5.2 | 21 |
| 1992 | 5.22 | 23 |
| 1991 | 5.23 | 23 |