| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 9.52 | 8 |
| 2015 | 5.94 | 35 |
| 2014 | 8.07 | 24 |
| 2013 | -2.44 | 153 |
| 2012 | 4.12 | 60 |
| 2011 | 1.92 | 121 |
| 2010 | -16.27 | 172 |
| 2009 | 20.76 | 6 |
| 2008 | 8.96 | 29 |
| 2007 | -25.62 | 170 |
| 2006 | -8.59 | 161 |
| 2005 | 10.32 | 20 |
| 2004 | 11.04 | 26 |
| 2003 | 2.98 | 78 |
| 2002 | -.66 | 121 |
| 2001 | -2.28 | 128 |
| 2000 | 0.03 | 105 |
| 1999 | 1.95 | 99 |
| 1998 | 5.53 | 38 |
| 1997 | -5.91 | 137 |
| 1996 | -8.38 | 149 |
| 1995 | -9.67 | 128 |
| 1994 | 18.15 | 3 |