| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | -6.57 | 129 |
| 2015 | 3.61 | 59 |
| 2014 | 2.79 | 86 |
| 2013 | 8.36 | 25 |
| 2012 | -3.08 | 143 |
| 2011 | 5.64 | 55 |
| 2010 | 6.7 | 37 |
| 2009 | -3.73 | 143 |
| 2008 | 5.77 | 60 |
| 2007 | 3.25 | 81 |
| 2006 | 4.64 | 58 |
| 2005 | 1.12 | 102 |
| 2004 | 2 | 111 |
| 2003 | 8.3 | 30 |
| 2002 | 8.02 | 25 |
| 2001 | 5.2 | 52 |
| 2000 | 2.63 | 78 |
| 1999 | 6.52 | 41 |
| 1998 | 3.41 | 67 |
| 1997 | 0.81 | 92 |
| 1996 | 2.54 | 88 |
| 1995 | 5.74 | 41 |
| 1994 | 7.44 | 26 |
| 1993 | 0.99 | 73 |
| 1992 | 5.44 | 38 |
| 1991 | -3.6 | 99 |
| 1990 | -3.7 | 92 |
| 1989 | 2.85 | 62 |
| 1988 | 0.84 | 77 |
| 1987 | 14.97 | 11 |
| 1986 | -8.02 | 104 |