| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 5.646 | 29 |
| 2015 | 3.258 | 84 |
| 2014 | 5.782 | 41 |
| 2013 | 6.294 | 44 |
| 2012 | 4.684 | 74 |
| 2011 | 5.132 | 72 |
| 2010 | 6.657 | 54 |
| 2009 | 6.49 | 26 |
| 2008 | 11.226 | 19 |
| 2007 | 8.863 | 54 |
| 2006 | -1.965 | 162 |
| 2005 | 11.703 | 15 |
| 2004 | 7.127 | 55 |
| 2003 | 6.594 | 42 |
| 2002 | -3.448 | 159 |
| 2001 | 0.328 | 140 |
| 2000 | -2.393 | 150 |
| 1999 | -1.421 | 141 |
| 1998 | -5.477 | 153 |
| 1997 | 14.367 | 6 |
| 1996 | 1.212 | 129 |
| 1995 | 8.939 | 16 |
| 1994 | -5.949 | 123 |
| 1993 | 0.74 | 91 |
| 1992 | -2.684 | 113 |
| 1991 | 6.796 | 24 |
| 1990 | 5.721 | 35 |
| 1989 | 3.495 | 60 |
| 1988 | 3.108 | 62 |
| 1987 | 2.889 | 72 |
| 1986 | 2.448 | 71 |