| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | -7.81 | 130 |
| 2015 | -6.08 | 152 |
| 2014 | 6.88 | 32 |
| 2013 | 4.48 | 64 |
| 2012 | 1.76 | 104 |
| 2011 | 1.99 | 118 |
| 2010 | -.3 | 111 |
| 2009 | -1.89 | 122 |
| 2008 | 19.41 | 14 |
| 2007 | 2.98 | 84 |
| 2006 | -5.46 | 149 |
| 2005 | 2.81 | 71 |
| 2004 | 0.86 | 121 |
| 2003 | 0.68 | 113 |
| 2002 | 6.53 | 32 |
| 2001 | -3.25 | 138 |
| 2000 | 4.72 | 54 |
| 1999 | 6.18 | 43 |
| 1998 | -5.31 | 137 |
| 1997 | 0.85 | 91 |
| 1996 | 23.98 | 4 |
| 1995 | -19.93 | 137 |
| 1994 | 7.87 | 18 |
| 1993 | 24.01 | 7 |
| 1992 | -27.26 | 128 |
| 1991 | 4.47 | 35 |
| 1990 | -7.14 | 104 |
| 1989 | 14.7 | 5 |
| 1988 | 2.81 | 61 |
| 1987 | 2.54 | 51 |
| 1986 | 6.59 | 23 |