| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 3.522 | 55 |
| 2015 | 5.05 | 46 |
| 2014 | 3.927 | 82 |
| 2013 | 4.933 | 66 |
| 2012 | 3.054 | 109 |
| 2011 | 2.954 | 114 |
| 2010 | 6.405 | 59 |
| 2009 | 4.332 | 48 |
| 2008 | 8.575 | 34 |
| 2007 | 7.527 | 74 |
| 2006 | 5.031 | 103 |
| 2005 | 5.681 | 81 |
| 2004 | 5.809 | 75 |
| 2003 | 4.397 | 81 |
| 2002 | 2.751 | 103 |
| 2001 | 3.603 | 88 |
| 2000 | 7.106 | 33 |
| 1999 | 5.005 | 53 |
| 1998 | 4.236 | 71 |
| 1997 | 6.431 | 42 |
| 1996 | 5.559 | 47 |
| 1995 | 4.897 | 50 |
| 1994 | 2.674 | 75 |
| 1993 | 2.74 | 66 |
| 1992 | 2.245 | 79 |
| 1991 | -7.028 | 117 |
| 1990 | 2.252 | 71 |
| 1989 | 6.464 | 26 |
| 1988 | 4.957 | 42 |
| 1987 | 14.053 | 8 |
| 1986 | 3.627 | 52 |