| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 3.51 | 52 |
| 2015 | 10.3 | 12 |
| 2014 | 0.79 | 118 |
| 2013 | 5.25 | 57 |
| 2012 | -35.75 | 179 |
| 2011 | 3.53 | 101 |
| 2010 | 5.17 | 82 |
| 2009 | 79.54 | 1 |
| 2008 | 5.64 | 61 |
| 2007 | -5.69 | 164 |
| 2006 | 7.9 | 54 |
| 2005 | 5.07 | 68 |
| 2004 | -3.75 | 161 |
| 2003 | 3.46 | 90 |
| 2002 | 7.95 | 36 |
| 2001 | 1.05 | 105 |
| 2000 | 4.26 | 87 |
| 1999 | 2.79 | 89 |
| 1998 | -9.1 | 154 |
| 1997 | 2.3 | 98 |
| 1996 | 5.22 | 63 |
| 1995 | 20.75 | 6 |
| 1994 | 26.33 | 2 |
| 1993 | -29.38 | 132 |
| 1992 | -7.69 | 109 |
| 1991 | 7.08 | 30 |
| 1990 | -4.44 | 98 |
| 1989 | 6.71 | 37 |
| 1988 | 14.12 | 14 |
| 1987 | 1.97 | 70 |
| 1986 | -1.69 | 90 |