| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2009 | 4.28 | 149 |
| 2008 | 7.279 | 118 |
| 2007 | 6.647 | 137 |
| 2006 | 4.7 | 161 |
| 2005 | 4.04 | 159 |
| 2004 | 4.04 | 150 |
| 2003 | 4.73 | 146 |
| 2002 | 8.71 | 106 |
| 2001 | 8.69 | 113 |
| 2000 | 8.93 | 119 |
| 1999 | 7.61 | 129 |
| 1998 | 9.8 | 114 |
| 1997 | 6 | 135 |
| 1996 | 6.68 | 129 |
| 1995 | 7.6 | 124 |
| 1994 | 8.38 | 113 |
| 1993 | 9.17 | 102 |
| 1992 | 14.27 | 63 |
| 1991 | 14.19 | 59 |
| 1990 | 14.15 | 54 |
| 1989 | 14.39 | 51 |
| 1988 | 16.44 | 28 |
| 1987 | 16.76 | 22 |
| 1986 | 15.97 | 25 |