| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 4.53 | 41 |
| 2015 | 5.77 | 29 |
| 2014 | 5.93 | 38 |
| 2013 | 5.56 | 46 |
| 2012 | 4.59 | 72 |
| 2011 | 4.14 | 93 |
| 2010 | 3.27 | 121 |
| 2009 | 1.93 | 76 |
| 2008 | 2.88 | 123 |
| 2007 | 3.26 | 154 |
| 2006 | 3.22 | 154 |
| 2005 | 2.3 | 166 |
| 2004 | 3.7 | 142 |
| 2003 | 4.03 | 102 |
| 2002 | 4.01 | 75 |
| 2001 | 4.51 | 59 |
| 2000 | 4.17 | 99 |
| 1999 | 4.06 | 73 |
| 1998 | 4.9 | 62 |
| 1997 | 5.31 | 70 |
| 1996 | 4.91 | 79 |
| 1995 | 4.13 | 92 |
| 1994 | 2.06 | 125 |
| 1993 | -7.93 | 165 |
| 1992 | -3.1 | 143 |
| 1991 | -3.81 | 150 |
| 1990 | -6.11 | 158 |
| 1989 | -1.82 | 150 |
| 1988 | -7.82 | 159 |
| 1987 | -2.15 | 147 |
| 1986 | 6.77 | 33 |