| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2004 | 38.87 | 27 |
| 2003 | 36.82 | 30 |
| 2002 | 36.71 | 33 |
| 2001 | 40.57 | 20 |
| 2000 | 41.42 | 18 |
| 1999 | 37.02 | 25 |
| 1998 | 33.01 | 40 |
| 1997 | 31.45 | 55 |
| 1996 | 36.64 | 30 |
| 1995 | 33.65 | 42 |
| 1994 | 33.81 | 39 |
| 1993 | 40.54 | 20 |
| 1992 | 41.68 | 21 |
| 1991 | 36.46 | 37 |
| 1990 | 32.39 | 54 |
| 1989 | 31.66 | 51 |
| 1988 | 37.52 | 25 |
| 1987 | 34.91 | 34 |
| 1986 | 31.15 | 45 |