| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2007 | 45.83 | 24 |
| 2006 | 34.82 | 37 |
| 2005 | 26.9 | 52 |
| 2004 | 26.09 | 52 |
| 2003 | 30.59 | 36 |
| 2002 | 36.15 | 28 |
| 2001 | 35.64 | 28 |
| 2000 | 27.17 | 38 |
| 1999 | 43.1 | 22 |
| 1998 | 50.02 | 11 |
| 1997 | 36.52 | 25 |
| 1996 | 40.46 | 22 |
| 1995 | 36.82 | 24 |
| 1994 | 60.07 | 7 |
| 1993 | 46.98 | 17 |
| 1992 | 27.4 | 31 |
| 1991 | 32.51 | 25 |
| 1990 | 31.02 | 26 |
| 1989 | 24.66 | 31 |
| 1988 | 29.49 | 26 |
| 1987 | 27.38 | 28 |
| 1986 | 41.09 | 13 |