| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | -2.22 | 168 |
| 2015 | 1.46 | 139 |
| 2014 | 4.25 | 69 |
| 2013 | 6.86 | 26 |
| 2012 | 4.74 | 69 |
| 2011 | 2.25 | 134 |
| 2010 | 3.79 | 104 |
| 2009 | 1.57 | 82 |
| 2008 | 0.82 | 164 |
| 2007 | 4.44 | 128 |
| 2006 | 5.99 | 85 |
| 2005 | 6 | 75 |
| 2004 | 3.62 | 144 |
| 2003 | 3.88 | 107 |
| 2002 | 4.38 | 68 |
| 2001 | 1.05 | 155 |
| 2000 | 1.76 | 156 |
| 1999 | 2.95 | 112 |
| 1998 | 2.6 | 135 |
| 1997 | 3.1 | 130 |
| 1996 | 3.84 | 106 |
| 1995 | 4.83 | 74 |
| 1994 | 2.4 | 117 |
| 1993 | 3.11 | 81 |
| 1992 | 3.23 | 77 |
| 1991 | 1.76 | 97 |
| 1990 | 21.02 | 4 |
| 1989 | 12.91 | 5 |
| 1988 | 6.57 | 50 |
| 1987 | 14.61 | 3 |
| 1986 | 12.26 | 5 |