| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 0.05 | 157 |
| 2015 | 9.36 | 3 |
| 2014 | 4.26 | 68 |
| 2013 | -2.44 | 186 |
| 2012 | 3.2 | 100 |
| 2011 | 5.04 | 75 |
| 2010 | 3.29 | 120 |
| 2009 | -9.08 | 194 |
| 2008 | -5.59 | 197 |
| 2007 | -.05 | 193 |
| 2006 | -2.74 | 196 |
| 2005 | 1.26 | 181 |
| 2004 | 6.95 | 56 |
| 2003 | -6.35 | 199 |
| 2002 | 6.6 | 25 |
| 2001 | 4.32 | 65 |
| 2000 | -1.31 | 184 |
| 1999 | -5.4 | 190 |
| 1998 | 2 | 144 |
| 1997 | 2.3 | 144 |
| 1996 | 10.4 | 14 |
| 1995 | 10.9 | 9 |
| 1994 | 7.3 | 29 |
| 1993 | -12.3 | 170 |
| 1992 | -6.4 | 153 |