| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 2.23 | 43 |
| 2015 | -19.39 | 150 |
| 2014 | -2.99 | 145 |
| 2013 | 7.16 | 15 |
| 2012 | 8.67 | 13 |
| 2011 | 16.15 | 4 |
| 2010 | 7.43 | 22 |
| 2009 | -14.52 | 154 |
| 2008 | 13.71 | 7 |
| 2007 | 17.8 | 4 |
| 2006 | 16.69 | 9 |
| 2005 | 20.21 | 3 |
| 2004 | 13.03 | 8 |
| 2003 | 13.26 | 6 |
| 2002 | 10.21 | 12 |
| 2001 | 10.15 | 8 |
| 2000 | 3.43 | 41 |
| 1999 | -1.12 | 98 |
| 1998 | 2.59 | 67 |
| 1997 | 0.65 | 94 |
| 1996 | -8.47 | 122 |
| 1995 | -.92 | 95 |
| 1994 | -8.41 | 99 |
| 1993 | -26 | 107 |
| 1992 | -9.52 | 97 |
| 1991 | -9.56 | 97 |