| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | -3.93 | 166 |
| 2015 | -23.13 | 188 |
| 2014 | -3.37 | 183 |
| 2013 | 8.63 | 8 |
| 2012 | 6.7 | 17 |
| 2011 | 18.91 | 1 |
| 2010 | 22.54 | 1 |
| 2009 | -.79 | 89 |
| 2008 | 1.28 | 121 |
| 2007 | 12.06 | 10 |
| 2006 | 10.84 | 13 |
| 2005 | 5.57 | 46 |
| 2004 | 23.72 | 5 |
| 2003 | 8.92 | 18 |
| 2002 | 6.32 | 22 |
| 2001 | 0.52 | 131 |
| 2000 | 3.43 | 82 |
| 1999 | -4.4 | 178 |
| 1998 | -6.5 | 187 |
| 1997 | -2.27 | 172 |
| 1996 | -2.41 | 178 |
| 1995 | 1.23 | 124 |
| 1994 | 2.15 | 80 |
| 1993 | 2.95 | 56 |
| 1992 | 10.58 | 7 |
| 1991 | 0.78 | 83 |
| 1990 | 4.52 | 33 |
| 1989 | 1.23 | 92 |
| 1988 | 3.58 | 64 |
| 1987 | 9.62 | 10 |
| 1986 | 2.33 | 68 |