| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 4.51 | 30 |
| 2015 | 1.53 | 93 |
| 2014 | 1.8 | 112 |
| 2013 | -.55 | 138 |
| 2012 | 0.98 | 114 |
| 2011 | -.08 | 142 |
| 2010 | -5.79 | 148 |
| 2009 | -2.83 | 130 |
| 2008 | -1.45 | 138 |
| 2007 | 4.86 | 58 |
| 2006 | 11.82 | 10 |
| 2005 | -3.57 | 133 |
| 2004 | 8.19 | 41 |
| 2003 | 1.17 | 107 |
| 2002 | 2.21 | 87 |
| 2001 | 4.15 | 59 |
| 2000 | 2.61 | 79 |
| 1999 | 2.27 | 93 |
| 1998 | -5.45 | 139 |
| 1997 | 2.01 | 78 |
| 1996 | -.95 | 121 |
| 1995 | 0.18 | 94 |
| 1994 | -3.75 | 106 |
| 1993 | 1.55 | 67 |
| 1992 | -2.41 | 93 |
| 1991 | -6.68 | 108 |
| 1990 | 5.4 | 43 |
| 1989 | 11.15 | 10 |
| 1988 | -1.09 | 86 |
| 1987 | -5.99 | 92 |
| 1986 | -.27 | 76 |