| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 0.63 | 82 |
| 2015 | -8.24 | 145 |
| 2014 | 0.56 | 103 |
| 2013 | 0.5 | 105 |
| 2012 | 8.86 | 10 |
| 2011 | 2.95 | 66 |
| 2010 | 4.26 | 42 |
| 2009 | -3.73 | 121 |
| 2008 | 6.28 | 33 |
| 2007 | 14.23 | 11 |
| 2006 | 9.12 | 23 |
| 2005 | 9.5 | 25 |
| 2004 | 9.56 | 23 |
| 2003 | 7.79 | 22 |
| 2002 | 9.5 | 17 |
| 2001 | 8.31 | 13 |
| 2000 | 8.99 | 12 |
| 1999 | 2.05 | 66 |
| 1998 | 6.13 | 25 |
| 1997 | 8.49 | 12 |
| 1996 | 5.44 | 37 |
| 1995 | 11.35 | 11 |
| 1994 | 8.15 | 9 |
| 1993 | -25.07 | 106 |
| 1992 | -12.03 | 102 |
| 1991 | -3.3 | 84 |