| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 3.48 | 29 |
| 2015 | 2.72 | 94 |
| 2014 | 3.15 | 91 |
| 2013 | 3.45 | 89 |
| 2012 | 3.74 | 79 |
| 2011 | 4.71 | 72 |
| 2010 | 3.08 | 94 |
| 2009 | 3.09 | 92 |
| 2008 | 4.28 | 100 |
| 2007 | 5.21 | 95 |
| 2006 | 4.09 | 100 |
| 2005 | -3.62 | 187 |
| 2004 | 7 | 38 |
| 2003 | 1.92 | 107 |
| 2002 | 3.71 | 63 |
| 2001 | 2.83 | 81 |
| 2000 | 3.58 | 79 |
| 1999 | 0.85 | 126 |
| 1998 | 1.49 | 119 |
| 1997 | 1.75 | 101 |
| 1996 | 1.54 | 80 |
| 1995 | 3.26 | 44 |
| 1994 | 1.55 | 64 |
| 1993 | 1.38 | 67 |
| 1992 | 1.75 | 44 |
| 1991 | 1.32 | 50 |
| 1990 | 2.6 | 32 |
| 1989 | 2.42 | 31 |
| 1988 | 3.12 | 21 |
| 1987 | 2.78 | 21 |
| 1986 | 2.93 | 17 |