| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 1.99 | 114 |
| 2015 | 3.02 | 90 |
| 2014 | 1.08 | 153 |
| 2013 | 2.39 | 120 |
| 2012 | -.93 | 170 |
| 2011 | 0.91 | 162 |
| 2010 | 0.77 | 166 |
| 2009 | -2.87 | 138 |
| 2008 | 5.48 | 75 |
| 2007 | 5.73 | 101 |
| 2006 | 5.38 | 103 |
| 2005 | 8.76 | 31 |
| 2004 | 6.1 | 74 |
| 2003 | 4 | 103 |
| 2002 | 5.3 | 48 |
| 2001 | 4.4 | 63 |
| 2000 | 5.5 | 62 |
| 1999 | 9.6 | 14 |
| 1998 | 15.6 | 4 |
| 1997 | 34.39 | 3 |
| 1996 | 88.96 | 1 |
| 1995 | 20.8 | 2 |