| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 6.335 | 22 |
| 2015 | 7.761 | 16 |
| 2014 | 8.81 | 11 |
| 2013 | 3.403 | 91 |
| 2012 | -.834 | 162 |
| 2011 | -1.627 | 173 |
| 2010 | 3.241 | 106 |
| 2009 | -3.17 | 147 |
| 2008 | -1.832 | 163 |
| 2007 | 5.741 | 103 |
| 2006 | 7.45 | 58 |
| 2005 | 7.09 | 62 |
| 2004 | 7.565 | 49 |
| 2003 | 4.276 | 83 |
| 2002 | 4.461 | 71 |
| 2001 | 5.758 | 41 |
| 2000 | 7.306 | 32 |
| 1999 | 8.89 | 14 |
| 1998 | 7.918 | 18 |
| 1997 | 10.005 | 17 |
| 1996 | 10.228 | 10 |