| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2015 | 0.6 | 116 |
| 2014 | 4.66 | 53 |
| 2013 | 0.48 | 160 |
| 2012 | 2.66 | 125 |
| 2011 | 1.27 | 170 |
| 2010 | 1.46 | 143 |
| 2009 | 1.89 | 113 |
| 2008 | 5.26 | 134 |
| 2007 | 5.03 | 92 |
| 2006 | -1.41 | 175 |
| 2005 | 3.71 | 97 |
| 2004 | 0.41 | 155 |
| 2003 | 2.24 | 108 |
| 2002 | 0.04 | 156 |
| 2001 | 2.14 | 127 |
| 2000 | 0.5 | 144 |
| 1999 | -1.94 | 157 |
| 1998 | 1.45 | 128 |
| 1997 | 3.97 | 97 |
| 1996 | 0.69 | 155 |
| 1995 | 9.65 | 76 |
| 1994 | 36.12 | 33 |
| 1993 | 0.53 | 141 |
| 1992 | -9.54 | 142 |
| 1991 | -11.69 | 139 |
| 1990 | 7.73 | 73 |
| 1989 | 6.74 | 71 |
| 1988 | -8.78 | 130 |
| 1987 | -.95 | 119 |
| 1986 | 6.29 | 62 |