| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 4.02 | 39 |
| 2015 | -4.07 | 140 |
| 2014 | -.15 | 135 |
| 2013 | 4.58 | 60 |
| 2012 | 7.82 | 23 |
| 2011 | 7.31 | 38 |
| 2010 | -8.28 | 162 |
| 2009 | 1.73 | 94 |
| 2008 | 13.5 | 19 |
| 2007 | -7.91 | 155 |
| 2006 | 1.51 | 107 |
| 2005 | -.63 | 120 |
| 2004 | 0.11 | 131 |
| 2003 | -5.18 | 147 |
| 2002 | -2.39 | 134 |
| 2001 | -5.42 | 146 |
| 2000 | 5.55 | 46 |
| 1999 | -2.14 | 131 |
| 1998 | -1.99 | 124 |
| 1997 | -1.49 | 120 |
| 1996 | 5.47 | 45 |
| 1995 | -8.13 | 126 |
| 1994 | -3.72 | 105 |
| 1993 | 0.38 | 79 |
| 1992 | 1.88 | 70 |
| 1991 | -.57 | 83 |
| 1990 | 6.79 | 30 |
| 1989 | -14.62 | 109 |
| 1988 | 6.32 | 36 |
| 1987 | 3.83 | 43 |
| 1986 | 16.14 | 9 |