| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 1.1 | 89 |
| 2015 | 0.49 | 124 |
| 2014 | 4.25 | 69 |
| 2013 | 4.92 | 59 |
| 2012 | -.77 | 127 |
| 2011 | -1.42 | 154 |
| 2010 | 8.86 | 41 |
| 2009 | 5.31 | 31 |
| 2008 | -.88 | 136 |
| 2007 | 12.58 | 18 |
| 2006 | 1.45 | 138 |
| 2005 | 14.33 | 10 |
| 2004 | 3.68 | 103 |
| 2003 | 1.37 | 123 |
| 2002 | -8.95 | 155 |
| 2001 | -4.9 | 146 |
| 2000 | -3.61 | 146 |
| 1999 | -3.15 | 139 |
| 1998 | 4.34 | 70 |
| 1997 | 6.52 | 52 |
| 1996 | 3.34 | 87 |
| 1995 | -2.46 | 116 |
| 1994 | 3.67 | 74 |
| 1993 | -5.13 | 101 |
| 1992 | 4.56 | 51 |
| 1991 | 1.65 | 67 |
| 1990 | -1.47 | 90 |
| 1989 | -.92 | 95 |
| 1988 | 1.13 | 77 |
| 1987 | 11.35 | 17 |
| 1986 | 10.32 | 22 |