| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 3.02 | 46 |
| 2015 | 1.22 | 99 |
| 2014 | 3.86 | 67 |
| 2013 | 2.94 | 85 |
| 2012 | 2.93 | 114 |
| 2011 | 5.48 | 76 |
| 2010 | 4 | 77 |
| 2009 | -.66 | 163 |
| 2008 | 25 | 11 |
| 2007 | 7.67 | 56 |
| 2006 | 6.14 | 74 |
| 2005 | 6.35 | 70 |
| 2004 | 3.92 | 81 |
| 2003 | 1.21 | 135 |
| 2002 | 3.23 | 84 |
| 2001 | -.6 | 160 |
| 2000 | -.79 | 155 |
| 1999 | 4.01 | 74 |
| 1998 | 14.81 | 25 |
| 1997 | 7.96 | 63 |
| 1996 | 7.15 | 81 |
| 1995 | -.8 | 160 |