| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2015 | 2.69 | 71 |
| 2014 | 1.95 | 100 |
| 2013 | 1.95 | 111 |
| 2012 | 2.94 | 113 |
| 2011 | 2.94 | 146 |
| 2010 | 1.28 | 150 |
| 2009 | 3.04 | 89 |
| 2008 | 5.34 | 132 |
| 2007 | 0.92 | 167 |
| 2006 | 5.12 | 82 |
| 2005 | 2.01 | 141 |
| 2004 | 0.23 | 160 |
| 2003 | 0.62 | 150 |
| 2002 | 2.83 | 90 |
| 2001 | 4.42 | 76 |
| 2000 | 1.23 | 131 |
| 1999 | 1.87 | 109 |
| 1998 | 3.17 | 103 |
| 1997 | 4.79 | 87 |
| 1996 | 3.92 | 109 |
| 1995 | 9.07 | 85 |
| 1994 | 35.09 | 36 |
| 1993 | -3.21 | 151 |
| 1992 | -.02 | 130 |
| 1991 | 0.06 | 132 |
| 1990 | 1.1 | 124 |
| 1989 | -1.67 | 131 |
| 1988 | 1.68 | 109 |
| 1987 | 13.14 | 40 |
| 1986 | 7.77 | 57 |