| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 3.733 | 52 |
| 2015 | 4.864 | 51 |
| 2014 | 4.639 | 66 |
| 2013 | 5.837 | 51 |
| 2012 | 7.564 | 33 |
| 2011 | 7.688 | 29 |
| 2010 | 8.598 | 29 |
| 2009 | 3.51 | 58 |
| 2008 | 8.332 | 37 |
| 2007 | 9.224 | 46 |
| 2006 | 8.75 | 41 |
| 2005 | 4.795 | 93 |
| 2004 | 3.999 | 109 |
| 2003 | 4.677 | 72 |
| 2002 | 3.741 | 81 |
| 2001 | -.68 | 149 |
| 2000 | 2.557 | 122 |
| 1999 | 1 | 122 |
| 1998 | -.96 | 140 |
| 1997 | 5.696 | 54 |
| 1996 | 3.054 | 94 |
| 1995 | 8.05 | 21 |
| 1994 | -4.035 | 118 |
| 1993 | 3.41 | 58 |
| 1992 | 0.726 | 98 |
| 1991 | 1.171 | 83 |
| 1990 | -4.322 | 100 |
| 1989 | -13.833 | 111 |
| 1988 | -9.574 | 110 |
| 1987 | 12.208 | 11 |
| 1986 | 11.531 | 7 |