| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 1.48 | 121 |
| 2015 | 1.74 | 143 |
| 2014 | 1.73 | 145 |
| 2013 | 1.63 | 150 |
| 2012 | 1.82 | 147 |
| 2011 | 1.84 | 146 |
| 2010 | 1.78 | 147 |
| 2009 | 1.46 | 152 |
| 2008 | 1.69 | 150 |
| 2007 | 1.8 | 151 |
| 2006 | 1.7 | 152 |
| 2005 | 1.87 | 151 |
| 2004 | 2.03 | 149 |
| 2003 | 2.06 | 149 |
| 2002 | 2.23 | 147 |
| 2001 | 2.34 | 147 |
| 2000 | 2.34 | 146 |
| 1999 | 2.51 | 142 |
| 1998 | 2.65 | 143 |
| 1997 | 2.63 | 146 |
| 1996 | 2.7 | 145 |
| 1995 | 2.73 | 146 |
| 1994 | 2.68 | 131 |
| 1993 | 2.55 | 127 |
| 1992 | 2.88 | 122 |
| 1991 | 2.92 | 121 |
| 1990 | 3.5 | 114 |
| 1989 | 3.5 | 103 |
| 1988 | 3.21 | 103 |
| 1987 | 3.47 | 102 |
| 1986 | 3.63 | 97 |