| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 1.49 | 92 |
| 2015 | 1.38 | 107 |
| 2014 | 3.09 | 64 |
| 2013 | 1.78 | 102 |
| 2012 | 4.68 | 36 |
| 2011 | 7.92 | 17 |
| 2010 | 2.49 | 101 |
| 2009 | -14.56 | 197 |
| 2008 | -5.17 | 191 |
| 2007 | 8.24 | 32 |
| 2006 | 10.92 | 12 |
| 2005 | 10 | 16 |
| 2004 | 6.93 | 40 |
| 2003 | 8.09 | 20 |
| 2002 | 6.75 | 19 |
| 2001 | 7.01 | 18 |
| 2000 | 10.03 | 9 |
| 1999 | -1.15 | 155 |
| 1998 | 5.12 | 34 |
| 1997 | 13.08 | 5 |
| 1996 | 6.89 | 26 |