| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 2.62 | 62 |
| 2015 | -2.27 | 170 |
| 2014 | -1.89 | 178 |
| 2013 | 0.04 | 147 |
| 2012 | 1.67 | 94 |
| 2011 | 1.64 | 126 |
| 2010 | -.31 | 165 |
| 2009 | -2.48 | 117 |
| 2008 | 2.64 | 92 |
| 2007 | -.41 | 180 |
| 2006 | 0.4 | 175 |
| 2005 | 0.98 | 156 |
| 2004 | 0.39 | 172 |
| 2003 | -.63 | 170 |
| 2002 | 3.25 | 61 |
| 2001 | 1.78 | 92 |
| 2000 | 0.7 | 148 |
| 1999 | 2.01 | 92 |
| 1998 | 1.63 | 117 |
| 1997 | 2.59 | 100 |
| 1996 | 1.1 | 133 |
| 1995 | 0.26 | 138 |
| 1994 | -1.28 | 138 |
| 1993 | -.89 | 113 |
| 1992 | -2.6 | 132 |
| 1991 | -2.75 | 132 |
| 1990 | -.35 | 105 |
| 1989 | 0.11 | 113 |
| 1988 | 2.99 | 82 |
| 1987 | 0.39 | 100 |