| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 1.719 | 101 |
| 2015 | 0.622 | 149 |
| 2014 | 3.055 | 97 |
| 2013 | 5.038 | 65 |
| 2012 | 4.91 | 68 |
| 2011 | 5.571 | 65 |
| 2010 | 7.338 | 41 |
| 2009 | 4.576 | 47 |
| 2008 | 10.106 | 22 |
| 2007 | 5.972 | 99 |
| 2006 | 2.856 | 136 |
| 2005 | 5.438 | 84 |
| 2004 | 4.057 | 107 |
| 2003 | -.2 | 149 |
| 2002 | -6.119 | 164 |
| 2001 | -2.214 | 158 |
| 2000 | -.508 | 144 |
| 1999 | -1.116 | 138 |
| 1998 | 4.226 | 72 |
| 1997 | -13.327 | 152 |
| 1996 | 5.915 | 42 |
| 1995 | -1.906 | 115 |
| 1994 | 8.162 | 18 |
| 1993 | 7.229 | 26 |
| 1992 | 9.01 | 14 |
| 1991 | 4.445 | 43 |
| 1990 | 1.749 | 78 |
| 1989 | 1.729 | 79 |
| 1988 | 1.827 | 80 |
| 1987 | 6.852 | 28 |
| 1986 | 9.882 | 11 |