| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 2.36 | 68 |
| 2015 | 5.24 | 50 |
| 2014 | 1.86 | 102 |
| 2013 | -3.95 | 158 |
| 2012 | 3.99 | 65 |
| 2011 | 2.4 | 119 |
| 2010 | 2.61 | 124 |
| 2009 | -5.5 | 109 |
| 2008 | 1.08 | 114 |
| 2007 | 6.82 | 70 |
| 2006 | 6.13 | 77 |
| 2005 | 3.17 | 103 |
| 2004 | 4.56 | 91 |
| 2003 | 2.71 | 103 |
| 2002 | 2.63 | 97 |
| 2001 | 3.24 | 71 |
| 2000 | 3.83 | 94 |
| 1999 | 2.32 | 94 |
| 1998 | 8.46 | 31 |
| 1997 | 7.61 | 39 |
| 1996 | -3.54 | 142 |
| 1995 | 4.26 | 66 |
| 1994 | 3.63 | 77 |
| 1993 | 6.05 | 35 |
| 1992 | 11.08 | 18 |
| 1991 | 1.89 | 65 |
| 1990 | 0.88 | 79 |
| 1989 | 6.42 | 40 |
| 1988 | 4.53 | 55 |
| 1987 | 8.33 | 30 |
| 1986 | 6.98 | 33 |