| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | -.22 | 160 |
| 2015 | -2.83 | 182 |
| 2014 | 0.73 | 161 |
| 2013 | 1.28 | 149 |
| 2012 | 3.52 | 96 |
| 2011 | 4.26 | 89 |
| 2010 | 4.5 | 90 |
| 2009 | -7.82 | 192 |
| 2008 | 5.25 | 81 |
| 2007 | 8.54 | 43 |
| 2006 | 8.15 | 43 |
| 2005 | 6.38 | 64 |
| 2004 | 7.18 | 51 |
| 2003 | 7.3 | 40 |
| 2002 | 4.74 | 57 |
| 2001 | 5.09 | 48 |
| 2000 | 10 | 12 |
| 1999 | 6.4 | 35 |
| 1998 | -5.3 | 187 |
| 1997 | 1.4 | 161 |
| 1996 | -3.6 | 184 |
| 1995 | -4.14 | 171 |
| 1994 | -12.57 | 175 |
| 1993 | -8.67 | 167 |
| 1992 | -14.53 | 171 |
| 1991 | -5.05 | 155 |
| 1990 | -3 | 147 |