| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 1.02 | 116 |
| 2015 | 2.03 | 78 |
| 2014 | 2.03 | 88 |
| 2013 | 1.54 | 109 |
| 2012 | 0.8 | 124 |
| 2011 | 1.94 | 113 |
| 2010 | 0.66 | 150 |
| 2009 | -1.65 | 103 |
| 2008 | 1.02 | 131 |
| 2007 | 3.95 | 100 |
| 2006 | 3.01 | 120 |
| 2005 | 0.9 | 158 |
| 2004 | 0.76 | 167 |
| 2003 | 0.14 | 159 |
| 2002 | 1.45 | 104 |
| 2001 | -.02 | 145 |
| 2000 | 1.27 | 138 |
| 1999 | 1.53 | 106 |
| 1998 | 2.67 | 93 |
| 1997 | 2.05 | 114 |
| 1996 | 0.65 | 141 |
| 1995 | 2.57 | 86 |
| 1994 | 1.64 | 94 |
| 1993 | 1.52 | 78 |
| 1992 | 2.41 | 59 |
| 1991 | 1.26 | 73 |
| 1990 | 0.73 | 95 |
| 1989 | 1.56 | 85 |
| 1988 | 1.5 | 102 |
| 1987 | 1.14 | 89 |
| 1986 | -2.21 | 130 |