| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 7.31 | 12 |
| 2015 | 2.75 | 80 |
| 2014 | -.24 | 137 |
| 2013 | -13.67 | 175 |
| 2012 | 6.79 | 32 |
| 2011 | 4.1 | 83 |
| 2010 | -4.07 | 139 |
| 2009 | 7.56 | 31 |
| 2008 | 2.6 | 103 |
| 2007 | 41.82 | 1 |
| 2006 | 0.28 | 120 |
| 2005 | -3.79 | 134 |
| 2004 | 6.07 | 52 |
| 2003 | 1.98 | 99 |
| 2002 | -3.29 | 140 |
| 2001 | -8.27 | 158 |
| 2000 | 9.59 | 16 |
| 1999 | 43.78 | 1 |
| 1998 | 3.89 | 56 |
| 1997 | 4.72 | 38 |
| 1996 | 1.89 | 99 |
| 1995 | 23.54 | 7 |
| 1994 | 11.2 | 10 |
| 1993 | 28.07 | 3 |
| 1992 | -4.72 | 103 |
| 1991 | -7.1 | 110 |
| 1990 | -11.45 | 111 |
| 1989 | -2.79 | 92 |
| 1988 | 7.94 | 25 |
| 1987 | 33.35 | 1 |
| 1986 | 7.09 | 21 |