| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 2.31 | 101 |
| 2015 | -9.77 | 188 |
| 2014 | -6.55 | 192 |
| 2013 | -.03 | 169 |
| 2012 | 0.24 | 155 |
| 2011 | 5.47 | 67 |
| 2010 | 4.2 | 96 |
| 2009 | -14.8 | 199 |
| 2008 | 2.3 | 133 |
| 2007 | 7.9 | 54 |
| 2006 | 7.3 | 58 |
| 2005 | 2.7 | 157 |
| 2004 | 12.1 | 12 |
| 2003 | 9.4 | 21 |
| 2002 | 5.2 | 51 |
| 2001 | 9.2 | 12 |
| 2000 | 5.9 | 49 |
| 1999 | -.2 | 157 |
| 1998 | -1.9 | 176 |
| 1997 | -3 | 184 |
| 1996 | -10 | 190 |
| 1995 | -12.2 | 184 |
| 1994 | -22.93 | 182 |
| 1993 | -14.23 | 172 |
| 1992 | -9.7 | 166 |
| 1991 | -8.41 | 164 |
| 1990 | -6.35 | 159 |
| 1989 | 3.87 | 84 |
| 1988 | 2.57 | 112 |