| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 2 | 77 |
| 2015 | 1.3 | 108 |
| 2014 | 1.2 | 111 |
| 2013 | -23.18 | 178 |
| 2012 | 4.09 | 63 |
| 2011 | 5.11 | 75 |
| 2010 | 1.74 | 130 |
| 2009 | 0.93 | 62 |
| 2008 | 1.62 | 105 |
| 2007 | 5.07 | 92 |
| 2006 | 6.07 | 78 |
| 2005 | 5.49 | 62 |
| 2004 | 5.03 | 81 |
| 2003 | -7.71 | 161 |
| 2002 | -1.38 | 134 |
| 2001 | 7.2 | 34 |
| 2000 | -2.81 | 143 |
| 1999 | 4.3 | 68 |
| 1998 | 1.7 | 102 |
| 1997 | -2 | 138 |
| 1996 | -11.5 | 152 |
| 1995 | 3.8 | 72 |
| 1994 | 13.09 | 12 |
| 1993 | 1.18 | 71 |
| 1992 | -5.43 | 106 |
| 1991 | -1.98 | 94 |
| 1990 | -.46 | 83 |
| 1989 | 1.53 | 77 |
| 1988 | -.14 | 88 |
| 1987 | 0.35 | 84 |
| 1986 | -.61 | 87 |