| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 4.99 | 42 |
| 2015 | 1.59 | 103 |
| 2014 | -.38 | 141 |
| 2013 | 5.89 | 49 |
| 2012 | 4.14 | 61 |
| 2011 | 4.62 | 80 |
| 2010 | 7.77 | 56 |
| 2009 | -1.58 | 84 |
| 2008 | 9.46 | 26 |
| 2007 | 8.72 | 44 |
| 2006 | 5.96 | 79 |
| 2005 | 8.28 | 39 |
| 2004 | 6.46 | 66 |
| 2003 | 3.91 | 86 |
| 2002 | 8.16 | 34 |
| 2001 | 3.32 | 69 |
| 2000 | 1.89 | 121 |
| 1999 | 1.33 | 108 |
| 1998 | 0.31 | 119 |
| 1997 | 7.64 | 37 |
| 1996 | 2.46 | 98 |
| 1995 | 6.22 | 45 |
| 1994 | 11.73 | 17 |
| 1993 | 7.38 | 27 |
| 1992 | -1.54 | 93 |
| 1991 | 4.05 | 44 |
| 1990 | -5.8 | 104 |
| 1989 | -11.1 | 108 |
| 1988 | -11.85 | 109 |
| 1987 | 6.49 | 36 |
| 1986 | 6.73 | 35 |