| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | -1.43 | 123 |
| 2015 | -2.1 | 168 |
| 2014 | -1.35 | 171 |
| 2013 | -.4 | 173 |
| 2012 | 2.39 | 139 |
| 2011 | 3.29 | 135 |
| 2010 | 2.38 | 116 |
| 2009 | 0.37 | 143 |
| 2008 | 4.67 | 140 |
| 2007 | 2.37 | 137 |
| 2006 | 2.5 | 129 |
| 2005 | 2.56 | 126 |
| 2004 | 2.29 | 117 |
| 2003 | 4.14 | 75 |
| 2002 | 2.8 | 91 |
| 2001 | 1.98 | 134 |
| 2000 | 4.14 | 70 |
| 1999 | 1.63 | 113 |
| 1998 | 2.23 | 115 |
| 1997 | 3.61 | 102 |
| 1996 | 2.98 | 121 |
| 1995 | 2.62 | 130 |
| 1994 | 4.7 | 108 |
| 1993 | 4.85 | 92 |
| 1992 | 6.51 | 75 |
| 1991 | 5.04 | 99 |
| 1990 | 4.5 | 97 |
| 1989 | 3.77 | 100 |
| 1988 | 3.43 | 95 |
| 1987 | 2.79 | 93 |
| 1986 | 1.22 | 102 |