| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 4.786 | 38 |
| 2015 | 5.105 | 45 |
| 2014 | 4.467 | 73 |
| 2013 | 2.979 | 101 |
| 2012 | -.678 | 160 |
| 2011 | 2.548 | 126 |
| 2010 | 5.429 | 75 |
| 2009 | -3.481 | 154 |
| 2008 | 1.356 | 141 |
| 2007 | 7.173 | 75 |
| 2006 | 8.26 | 43 |
| 2005 | 3.764 | 114 |
| 2004 | 3.439 | 117 |
| 2003 | 0.989 | 137 |
| 2002 | 3.345 | 87 |
| 2001 | 4.559 | 68 |
| 2000 | 8.491 | 23 |
| 1999 | 8.154 | 15 |
| 1998 | 7.008 | 23 |
| 1997 | 5.236 | 63 |
| 1996 | 1.535 | 121 |