| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 3.17 | 43 |
| 2015 | 3 | 57 |
| 2014 | 2.61 | 74 |
| 2013 | 3.09 | 64 |
| 2012 | 1.78 | 91 |
| 2011 | 3.27 | 76 |
| 2010 | 5.48 | 34 |
| 2009 | 0.51 | 67 |
| 2008 | -2.49 | 182 |
| 2007 | 3.95 | 101 |
| 2006 | 3.59 | 105 |
| 2005 | 3.05 | 103 |
| 2004 | 2.28 | 130 |
| 2003 | 0.17 | 156 |
| 2002 | -2.16 | 174 |
| 2001 | 0.98 | 116 |
| 2000 | -2.12 | 176 |
| 1999 | -.47 | 144 |
| 1998 | 0.46 | 137 |
| 1997 | -2.32 | 173 |
| 1996 | 1.18 | 131 |
| 1995 | 1.36 | 119 |
| 1994 | -.44 | 134 |
| 1993 | -2.73 | 147 |
| 1992 | -3.92 | 139 |
| 1991 | -1.82 | 122 |
| 1990 | 0.77 | 94 |
| 1989 | 1.17 | 94 |
| 1988 | 2.55 | 88 |
| 1987 | 2.22 | 68 |
| 1986 | 3.35 | 47 |