| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | -6.45 | 116 |
| 2015 | -3.59 | 141 |
| 2014 | 1.85 | 87 |
| 2013 | 3.63 | 61 |
| 2012 | 0.44 | 114 |
| 2011 | 5.27 | 46 |
| 2010 | 3.71 | 62 |
| 2009 | 5.04 | 71 |
| 2008 | -.78 | 142 |
| 2007 | 15.77 | 17 |
| 2006 | 12.83 | 13 |
| 2005 | -1.05 | 128 |
| 2004 | 4.14 | 59 |
| 2003 | -2.58 | 130 |
| 2002 | -1.97 | 124 |
| 2001 | 9.29 | 20 |
| 2000 | 7.69 | 25 |
| 1999 | 2.02 | 82 |
| 1998 | -3.88 | 118 |
| 1997 | 1.61 | 85 |
| 1996 | 1.63 | 82 |
| 1995 | 2.3 | 62 |
| 1994 | 2.61 | 51 |
| 1993 | 4.24 | 43 |
| 1992 | 6.12 | 25 |
| 1991 | -.24 | 85 |
| 1990 | 2.32 | 51 |