| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | -3.59 | 173 |
| 2015 | -3.77 | 183 |
| 2014 | 0.5 | 167 |
| 2013 | 3 | 99 |
| 2012 | 1.92 | 126 |
| 2011 | 3.97 | 96 |
| 2010 | 7.53 | 39 |
| 2009 | -.13 | 103 |
| 2008 | 5.09 | 82 |
| 2007 | 6.07 | 95 |
| 2006 | 3.96 | 141 |
| 2005 | 3.2 | 143 |
| 2004 | 5.76 | 82 |
| 2003 | 1.14 | 161 |
| 2002 | 3.05 | 105 |
| 2001 | 1.39 | 148 |
| 2000 | 4.11 | 103 |
| 1999 | 0.47 | 151 |
| 1998 | 0.34 | 161 |
| 1997 | 3.4 | 121 |
| 1996 | 2.21 | 141 |
| 1995 | 4.42 | 82 |
| 1994 | 5.33 | 54 |
| 1993 | 4.67 | 58 |
| 1992 | -.47 | 131 |
| 1991 | 1.51 | 101 |
| 1990 | -3.1 | 150 |
| 1989 | 3.28 | 98 |
| 1988 | -.1 | 139 |
| 1987 | 3.6 | 74 |
| 1986 | 7.99 | 23 |