| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 2.2 | 108 |
| 2015 | 1.02 | 154 |
| 2014 | 2.06 | 129 |
| 2013 | 3.5 | 90 |
| 2012 | 3 | 106 |
| 2011 | 2.6 | 124 |
| 2010 | 2.2 | 140 |
| 2009 | 1.95 | 75 |
| 2008 | 0.4 | 168 |
| 2007 | 0.8 | 188 |
| 2006 | 2.65 | 163 |
| 2005 | 2.84 | 151 |
| 2004 | 1.92 | 171 |
| 2003 | 2.1 | 149 |
| 2002 | 2.32 | 124 |
| 2001 | 2.33 | 116 |
| 2000 | 10.85 | 9 |
| 1999 | 1.92 | 133 |
| 1998 | 1.28 | 155 |
| 1997 | 4.03 | 106 |
| 1996 | -1.29 | 182 |
| 1995 | 3.61 | 106 |
| 1994 | -5.28 | 169 |
| 1993 | 3.01 | 84 |
| 1992 | 8.53 | 19 |
| 1991 | -5.4 | 156 |
| 1990 | 5.09 | 53 |
| 1989 | -3.18 | 153 |
| 1988 | 2.69 | 110 |
| 1987 | 1.64 | 114 |
| 1986 | 1.87 | 114 |