| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 1.56 | 75 |
| 2015 | 2.05 | 87 |
| 2014 | 3.02 | 67 |
| 2013 | 0.49 | 117 |
| 2012 | 2.43 | 87 |
| 2011 | 1.19 | 95 |
| 2010 | -3.62 | 142 |
| 2009 | 0.16 | 130 |
| 2008 | 10.18 | 28 |
| 2007 | 3.74 | 83 |
| 2006 | 5.22 | 64 |
| 2005 | 1.14 | 110 |
| 2004 | -.69 | 120 |
| 2003 | -14.27 | 141 |
| 2002 | -15.76 | 146 |
| 2001 | 35.46 | 2 |
| 2000 | -2.6 | 117 |
| 1999 | 4.37 | 42 |
| 1998 | 3.79 | 50 |
| 1997 | -2.4 | 116 |
| 1996 | 0.17 | 98 |
| 1995 | 5.71 | 28 |
| 1994 | -1.14 | 90 |
| 1993 | -3.88 | 101 |
| 1992 | -10.58 | 102 |
| 1991 | 0 | 83 |