| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 1.39 | 96 |
| 2015 | 5.77 | 13 |
| 2014 | 6.9 | 6 |
| 2013 | 1.94 | 98 |
| 2012 | -1.54 | 168 |
| 2011 | 0.38 | 152 |
| 2010 | -.87 | 173 |
| 2009 | -6.94 | 183 |
| 2008 | 0.61 | 141 |
| 2007 | 5.82 | 61 |
| 2006 | -4.31 | 197 |
| 2005 | 12.95 | 5 |
| 2004 | -.92 | 185 |
| 2003 | 9.17 | 16 |
| 2002 | 3.18 | 64 |
| 2001 | -2.25 | 170 |
| 2000 | 4.71 | 50 |
| 1999 | 6.77 | 20 |
| 1998 | 11.54 | 7 |
| 1997 | 4.68 | 51 |
| 1996 | 3.88 | 66 |
| 1995 | 1.26 | 122 |
| 1994 | 0.57 | 114 |
| 1993 | -3.06 | 148 |
| 1992 | -1.61 | 118 |
| 1991 | 1.21 | 76 |
| 1990 | 4.65 | 32 |
| 1989 | 5.05 | 33 |
| 1988 | 4.35 | 53 |
| 1987 | 9.94 | 7 |
| 1986 | 6.94 | 18 |