| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 30.42 | 1 |
| 2015 | 7.22 | 32 |
| 2014 | -6.37 | 165 |
| 2013 | 7.2 | 44 |
| 2012 | 11.31 | 13 |
| 2011 | 13.51 | 19 |
| 2010 | -2.88 | 154 |
| 2009 | -.88 | 81 |
| 2008 | -.61 | 129 |
| 2007 | 10.73 | 25 |
| 2006 | -35.69 | 170 |
| 2005 | -5.46 | 164 |
| 2004 | -.2 | 152 |
| 2003 | -2.76 | 153 |
| 2002 | -.03 | 125 |
| 2001 | 2.99 | 74 |
| 2000 | -1.56 | 139 |
| 1999 | -1.54 | 134 |
| 1998 | -.94 | 132 |
| 1997 | 9.55 | 28 |
| 1996 | 10.95 | 18 |
| 1995 | 1.44 | 94 |
| 1994 | 9.05 | 29 |
| 1993 | 46.43 | 1 |
| 1992 | -2.91 | 101 |
| 1991 | 9.69 | 21 |
| 1990 | 3.95 | 49 |
| 1989 | -26.45 | 112 |
| 1988 | -2.47 | 99 |
| 1987 | 1.31 | 75 |
| 1986 | -3.07 | 97 |