| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2015 | 4.867 | 50 |
| 2014 | 5.572 | 49 |
| 2013 | 6.07 | 48 |
| 2012 | 5.513 | 61 |
| 2011 | 5.549 | 67 |
| 2010 | 3.988 | 98 |
| 2009 | 3.542 | 56 |
| 2008 | 2.261 | 126 |
| 2007 | 5.001 | 117 |
| 2006 | 3.544 | 128 |
| 2005 | 2.975 | 126 |
| 2004 | 6.638 | 67 |
| 2003 | 7.363 | 33 |
| 2002 | 7.263 | 26 |
| 2001 | 8.483 | 16 |
| 2000 | 9.006 | 17 |
| 1999 | 4.091 | 70 |
| 1998 | 1.371 | 123 |
| 1997 | 1.869 | 122 |
| 1996 | 8.443 | 18 |
| 1995 | 9.318 | 15 |
| 1994 | 2.594 | 77 |
| 1993 | -21.776 | 129 |
| 1992 | -11.044 | 123 |
| 1991 | -2.254 | 104 |
| 1990 | -8.265 | 109 |
| 1989 | -10.009 | 109 |
| 1988 | -2.726 | 105 |
| 1987 | -7.73 | 109 |
| 1986 | 7.155 | 20 |