| 时间 | 值 | 世界排名 |
|---|---|---|
| 2016 | 6 | 92 |
| 2015 | 4.8 | 92 |
| 2014 | 4.2 | 95 |
| 2013 | 0 | 145 |
| 2012 | 2.8 | 103 |
| 2011 | 3.1 | 105 |
| 2010 | 6.2 | 90 |
| 2009 | 9.2 | 85 |
| 2008 | 10.5 | 90 |
| 2007 | 11 | 88 |
| 2006 | 10.5 | 89 |
| 2005 | 10.1 | 89 |
| 2004 | 9.6 | 96 |
| 2003 | 13.6 | 94 |
| 2002 | 12.9 | 92 |
| 2001 | 12.9 | 96 |
| 2000 | 11.9 | 110 |
| 1999 | 6.9 | 114 |
| 1998 | 3.3 | 122 |
| 1997 | 2.1 | 127 |
| 1996 | 2.1 | 124 |
| 1995 | 2.3 | 122 |
| 1994 | 2.3 | 124 |
| 1993 | 2.3 | 124 |