| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | -.95 | 117 |
| 2015 | 3.69 | 69 |
| 2014 | -2.29 | 155 |
| 2013 | 0.51 | 130 |
| 2012 | 4.99 | 49 |
| 2011 | 1.77 | 126 |
| 2010 | 7.42 | 61 |
| 2009 | -28.55 | 176 |
| 2008 | 7.43 | 42 |
| 2007 | 11.26 | 21 |
| 2006 | 16.57 | 16 |
| 2005 | 14.8 | 9 |
| 2004 | 7.38 | 56 |
| 2003 | 24.73 | 5 |
| 2002 | 21.34 | 6 |
| 2001 | 5.16 | 50 |
| 2000 | 23.72 | 7 |
| 1999 | 6.01 | 47 |
| 1998 | 0.9 | 114 |
| 1997 | 1.92 | 101 |
| 1996 | 5.98 | 54 |
| 1995 | 0.78 | 101 |
| 1994 | 8.73 | 31 |
| 1993 | 0.68 | 73 |
| 1992 | -72.95 | 130 |
| 1991 | -15.96 | 120 |