| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 4.32 | 32 |
| 2015 | -6.81 | 154 |
| 2014 | 4.82 | 44 |
| 2013 | 3.29 | 80 |
| 2012 | -7.42 | 154 |
| 2011 | 0.62 | 135 |
| 2010 | -7.97 | 161 |
| 2009 | -9.04 | 161 |
| 2008 | 32 | 4 |
| 2007 | -26.89 | 172 |
| 2006 | -.5 | 125 |
| 2005 | -8.49 | 159 |
| 2004 | 3.62 | 87 |
| 2003 | -2.01 | 132 |
| 2002 | 5.2 | 42 |
| 2001 | 0.48 | 102 |
| 2000 | -11.25 | 148 |
| 1999 | 6.65 | 39 |
| 1998 | 2.47 | 75 |
| 1997 | 35.79 | 1 |
| 1996 | -36.4 | 155 |
| 1995 | 14.45 | 11 |
| 1994 | 9.47 | 15 |
| 1993 | -30.22 | 133 |
| 1992 | -14.76 | 122 |
| 1991 | 7.7 | 20 |
| 1990 | -3.7 | 91 |
| 1989 | -4.97 | 99 |
| 1988 | 7.65 | 32 |
| 1987 | -14.64 | 106 |
| 1986 | 22.05 | 3 |