| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 1.09 | 110 |
| 2015 | 0.02 | 139 |
| 2014 | 2.89 | 69 |
| 2013 | 4.29 | 38 |
| 2012 | 3.2 | 62 |
| 2011 | 4.81 | 52 |
| 2010 | 7.43 | 17 |
| 2009 | 3.87 | 22 |
| 2008 | 6.82 | 25 |
| 2007 | 6.26 | 56 |
| 2006 | 3.93 | 99 |
| 2005 | 7.41 | 30 |
| 2004 | 5.05 | 65 |
| 2003 | 0.87 | 143 |
| 2002 | -7.75 | 189 |
| 2001 | -4.01 | 184 |
| 2000 | -2.28 | 178 |
| 1999 | -2.45 | 167 |
| 1998 | 3.85 | 60 |
| 1997 | 7.79 | 21 |
| 1996 | 4.82 | 47 |
| 1995 | -2.16 | 160 |
| 1994 | 6.5 | 19 |
| 1993 | 1.9 | 74 |
| 1992 | 7.15 | 17 |
| 1991 | 2.81 | 47 |
| 1990 | -.38 | 106 |
| 1989 | 0.45 | 110 |
| 1988 | 0.85 | 107 |
| 1987 | 7.32 | 24 |
| 1986 | 8.12 | 11 |