| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 4.308 | 42 |
| 2015 | 4.102 | 63 |
| 2014 | 1.706 | 134 |
| 2013 | 3.817 | 84 |
| 2012 | 7.859 | 29 |
| 2011 | 3.792 | 95 |
| 2010 | 6.553 | 56 |
| 2009 | 0.177 | 106 |
| 2008 | 1.123 | 145 |
| 2007 | 5.123 | 114 |
| 2006 | 4.935 | 105 |
| 2005 | 4.113 | 107 |
| 2004 | 6.907 | 59 |
| 2003 | 5.159 | 66 |
| 2002 | 5.604 | 52 |
| 2001 | 4.276 | 74 |
| 2000 | 5.254 | 64 |
| 1999 | 2.641 | 97 |
| 1998 | -7.16 | 155 |
| 1997 | -2.782 | 143 |
| 1996 | 4.783 | 61 |
| 1995 | 7.151 | 25 |
| 1994 | 7.271 | 24 |
| 1993 | 9.275 | 13 |
| 1992 | 7.509 | 19 |
| 1991 | 6.142 | 30 |
| 1990 | 12.697 | 8 |
| 1989 | 9.326 | 16 |
| 1988 | 12.117 | 9 |
| 1987 | 9.976 | 16 |
| 1986 | 5.937 | 26 |