| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | -9.69 | 176 |
| 2015 | -9.13 | 187 |
| 2014 | -.69 | 182 |
| 2013 | -4.13 | 193 |
| 2012 | 8.31 | 17 |
| 2011 | 6.52 | 44 |
| 2010 | -8.92 | 198 |
| 2009 | 1.34 | 85 |
| 2008 | 17.8 | 1 |
| 2007 | 15.28 | 5 |
| 2006 | 7.7 | 50 |
| 2005 | 16.75 | 4 |
| 2004 | 38 | 2 |
| 2003 | 13.96 | 7 |
| 2002 | 19.46 | 2 |
| 2001 | 63.38 | 1 |
| 2000 | 18.21 | 2 |
| 1999 | 25.66 | 1 |
| 1998 | 23.77 | 3 |
| 1997 | 149.97 | 1 |
| 1996 | 66.58 | 2 |
| 1995 | 17.49 | 3 |
| 1994 | 16.67 | 3 |
| 1993 | 11.03 | 9 |
| 1992 | 34.75 | 1 |
| 1991 | -1.02 | 137 |
| 1990 | -1.76 | 139 |
| 1989 | -1.23 | 145 |
| 1988 | 2.66 | 111 |
| 1987 | 4.44 | 61 |
| 1986 | -2.33 | 146 |