| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2012 | 5.81 | 51 |
| 2011 | 8 | 35 |
| 2010 | 8 | 36 |
| 2009 | 8 | 44 |
| 2008 | 8 | 48 |
| 2007 | 8 | 42 |
| 2006 | 8 | 40 |
| 2005 | 8 | 40 |
| 2004 | 8 | 34 |
| 2003 | 8 | 45 |
| 2002 | 8 | 47 |
| 2001 | 8 | 52 |
| 2000 | 9.417 | 50 |
| 1999 | 9 | 58 |
| 1998 | 9 | 66 |
| 1997 | 9 | 69 |
| 1996 | 9 | 73 |
| 1995 | 9 | 68 |
| 1994 | 9 | 59 |
| 1993 | 8.625 | 58 |
| 1992 | 7.517 | 68 |
| 1991 | 5 | 99 |
| 1990 | 5 | 99 |
| 1989 | 5 | 97 |
| 1988 | 6 | 79 |
| 1987 | 6 | 75 |
| 1986 | 6.583 | 72 |