| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | -.04 | 98 |
| 2015 | -.41 | 128 |
| 2014 | 1.61 | 91 |
| 2013 | -2.4 | 145 |
| 2012 | 3.63 | 66 |
| 2011 | -2.65 | 140 |
| 2010 | 2.7 | 73 |
| 2009 | -2.4 | 144 |
| 2008 | 1.1 | 126 |
| 2007 | 2.8 | 95 |
| 2006 | 2.7 | 94 |
| 2005 | 2.9 | 80 |
| 2004 | 1.8 | 93 |
| 2003 | 6.9 | 32 |
| 2002 | -6.7 | 137 |
| 2001 | 10.4 | 16 |
| 2000 | 1 | 97 |
| 1999 | -7.9 | 127 |
| 1998 | -3.5 | 117 |
| 1997 | -2.3 | 114 |
| 1996 | -5.4 | 120 |
| 1995 | -7.9 | 112 |
| 1994 | -12.16 | 113 |
| 1993 | 0.11 | 78 |
| 1992 | 3.85 | 37 |
| 1991 | 7.41 | 26 |