| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 1.03 | 86 |
| 2015 | 3.71 | 58 |
| 2014 | -1.12 | 145 |
| 2013 | 2.61 | 96 |
| 2012 | 1.77 | 103 |
| 2011 | 8.12 | 32 |
| 2010 | 0.98 | 89 |
| 2009 | 0.3 | 107 |
| 2008 | 7.45 | 45 |
| 2007 | 3.94 | 71 |
| 2006 | 8.36 | 23 |
| 2005 | 3.56 | 63 |
| 2004 | 2.74 | 99 |
| 2003 | 1.18 | 106 |
| 2002 | 4.86 | 47 |
| 2001 | -2 | 123 |
| 2000 | 7.04 | 31 |
| 1999 | 12.78 | 13 |
| 1998 | -.68 | 109 |
| 1997 | 3.95 | 57 |
| 1996 | 5.67 | 43 |
| 1995 | 3.72 | 61 |
| 1994 | 14.91 | 5 |
| 1993 | 10.36 | 15 |
| 1992 | -6.12 | 109 |
| 1991 | 1.94 | 66 |
| 1990 | -6.42 | 100 |
| 1989 | -4.78 | 98 |
| 1988 | 7.85 | 26 |
| 1987 | 5.08 | 34 |
| 1986 | 6.16 | 26 |