| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | -2.31 | 101 |
| 2015 | -6.16 | 141 |
| 2014 | 9.51 | 3 |
| 2013 | -29.67 | 158 |
| 2012 | 18.24 | 3 |
| 2011 | 26.54 | 2 |
| 2010 | -2.79 | 147 |
| 2009 | 1.07 | 54 |
| 2008 | -20.12 | 156 |
| 2007 | 27.81 | 3 |
| 2006 | 27.02 | 4 |
| 2005 | -32.13 | 143 |
| 2004 | 15.58 | 4 |
| 2003 | -12.45 | 139 |
| 2002 | 33.31 | 2 |
| 2001 | 0.75 | 90 |
| 2000 | -7.67 | 124 |
| 1999 | 10.29 | 6 |
| 1998 | 11.52 | 9 |
| 1997 | 27.41 | 2 |
| 1996 | 25.1 | 2 |
| 1995 | -1.84 | 101 |
| 1994 | -20.03 | 110 |
| 1993 | 6.43 | 17 |
| 1992 | -6.92 | 95 |
| 1991 | 20.52 | 2 |
| 1990 | -9.83 | 85 |
| 1989 | -7.7 | 83 |
| 1988 | -2.11 | 74 |
| 1987 | -15.7 | 86 |
| 1986 | 7.88 | 13 |