| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 2.39 | 50 |
| 2015 | 2.97 | 69 |
| 2014 | 4.49 | 57 |
| 2013 | 4.35 | 67 |
| 2012 | 4.07 | 85 |
| 2011 | 5.26 | 79 |
| 2010 | 2.25 | 123 |
| 2009 | 0.63 | 137 |
| 2008 | 4.33 | 148 |
| 2007 | 2.01 | 152 |
| 2006 | 2.05 | 150 |
| 2005 | 0.83 | 167 |
| 2004 | -.27 | 164 |
| 2003 | -2.67 | 172 |
| 2002 | -2.98 | 169 |
| 2001 | -1.66 | 166 |
| 2000 | -3.69 | 165 |
| 1999 | -4.01 | 163 |
| 1998 | 2.91 | 107 |
| 1997 | 5.78 | 79 |
| 1996 | 6.28 | 87 |
| 1995 | 9.08 | 84 |
| 1994 | 8.74 | 84 |
| 1993 | 8.8 | 75 |
| 1992 | 9.65 | 62 |
| 1991 | 11.16 | 63 |
| 1990 | 10.43 | 60 |
| 1989 | 10.18 | 55 |
| 1988 | 7.89 | 62 |
| 1987 | 5.65 | 69 |
| 1986 | 3.38 | 81 |