| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2015 | -4.17 | 135 |
| 2014 | 0.93 | 98 |
| 2013 | 5.86 | 23 |
| 2012 | 9.32 | 9 |
| 2011 | 8.02 | 19 |
| 2010 | 1.51 | 96 |
| 2009 | -15.4 | 157 |
| 2008 | 11.58 | 9 |
| 2007 | 1.75 | 105 |
| 2006 | 17.93 | 8 |
| 2005 | 7.11 | 32 |
| 2004 | 6.24 | 41 |
| 2003 | 22.75 | 1 |
| 2002 | 3.76 | 45 |
| 2001 | 1.27 | 82 |
| 2000 | -6.14 | 122 |
| 1999 | -1.17 | 100 |
| 1998 | 16.03 | 5 |
| 1997 | -10.25 | 124 |
| 1996 | 4.44 | 47 |
| 1995 | -17.53 | 119 |
| 1994 | -17.61 | 107 |
| 1993 | -9.17 | 102 |
| 1992 | -12.39 | 103 |
| 1991 | -18.59 | 104 |