| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 2.74 | 91 |
| 2015 | 2.88 | 96 |
| 2014 | 4.62 | 60 |
| 2013 | 3.39 | 94 |
| 2012 | 6.35 | 37 |
| 2011 | 7.22 | 35 |
| 2010 | 6.25 | 63 |
| 2009 | -3.65 | 148 |
| 2008 | 2.31 | 132 |
| 2007 | 12.34 | 12 |
| 2006 | 9.38 | 28 |
| 2005 | 9.6 | 20 |
| 2004 | 5.86 | 79 |
| 2003 | 11.06 | 14 |
| 2002 | 5.47 | 44 |
| 2001 | 4.81 | 53 |
| 2000 | 1.84 | 154 |
| 1999 | 2.87 | 115 |
| 1998 | 3.1 | 122 |
| 1997 | 10.52 | 15 |
| 1996 | 11.2 | 10 |
| 1995 | 2.6 | 125 |
| 1994 | -10.4 | 173 |
| 1993 | -29.3 | 180 |
| 1992 | -44.9 | 178 |
| 1991 | -21.1 | 174 |
| 1990 | -14.79 | 164 |
| 1989 | -7.2 | 159 |
| 1988 | 5.56 | 68 |
| 1987 | 1.28 | 119 |
| 1986 | -8.18 | 155 |