| 时间 | 值 | 世界排名 |
|---|---|---|
| 2007 | 3.2 | 92 |
| 2006 | 3.6 | 72 |
| 2005 | 2 | 118 |
| 2004 | 0.5 | 144 |
| 2003 | 0.2 | 144 |
| 2002 | 0.2 | 143 |
| 2001 | 0.4 | 137 |
| 2000 | 1.3 | 125 |
| 1999 | 0.3 | 142 |
| 1998 | 0 | 144 |
| 1997 | 0.4 | 143 |
| 1996 | 0.5 | 140 |
| 1995 | 0.4 | 138 |
| 1994 | 0.3 | 137 |
| 1993 | 0 | 135 |
| 1992 | 0.1 | 128 |
| 1991 | 0.1 | 125 |
| 1990 | 0.1 | 122 |
| 1989 | 0.1 | 123 |
| 1988 | 0.1 | 122 |
| 1987 | 0.1 | 122 |
| 1986 | 0.1 | 120 |