| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 2.75 | 36 |
| 2015 | 2.45 | 57 |
| 2014 | 1.8 | 73 |
| 2013 | -5.67 | 152 |
| 2012 | -2.82 | 146 |
| 2011 | -3.16 | 141 |
| 2010 | 0.66 | 111 |
| 2009 | -8.83 | 145 |
| 2008 | 5.22 | 45 |
| 2007 | 7.9 | 31 |
| 2006 | 2.7 | 76 |
| 2005 | 1.98 | 105 |
| 2004 | 5.77 | 44 |
| 2003 | 1.59 | 85 |
| 2002 | 1.54 | 84 |
| 2001 | 2.78 | 50 |
| 2000 | 6.17 | 23 |
| 1999 | 1.97 | 67 |
| 1998 | 4.42 | 42 |
| 1997 | 1.01 | 91 |
| 1996 | 1.51 | 90 |
| 1995 | 26.75 | 2 |
| 1994 | 4.65 | 24 |
| 1993 | -6.91 | 100 |
| 1992 | 0.47 | 62 |
| 1991 | 7.11 | 16 |
| 1990 | 6.66 | 13 |
| 1989 | 5.39 | 19 |
| 1988 | 9.34 | 4 |
| 1987 | 4.31 | 24 |
| 1986 | 0.57 | 57 |