| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | -.13 | 111 |
| 2015 | -2.44 | 150 |
| 2014 | 0.15 | 129 |
| 2013 | 0.61 | 126 |
| 2012 | 3.77 | 66 |
| 2011 | 5.1 | 76 |
| 2010 | 6.61 | 68 |
| 2009 | -10.41 | 146 |
| 2008 | 1.85 | 101 |
| 2007 | 4.81 | 94 |
| 2006 | 4.49 | 96 |
| 2005 | 4.09 | 88 |
| 2004 | 9.71 | 41 |
| 2003 | 9.05 | 43 |
| 2002 | 3.76 | 82 |
| 2001 | 5.77 | 40 |
| 2000 | 12.14 | 19 |
| 1999 | 9.48 | 23 |
| 1998 | -5.06 | 147 |
| 1997 | 0.88 | 117 |
| 1996 | -5.57 | 146 |
| 1995 | -4.55 | 117 |
| 1994 | -19.86 | 127 |
| 1993 | -13.25 | 121 |
| 1992 | -21.6 | 122 |
| 1991 | -7.29 | 111 |