| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2005 | 45.4 | 76 |
| 2004 | 31.38 | 106 |
| 2003 | 70.19 | 38 |
| 2002 | 151.55 | 6 |
| 2001 | 48.6 | 61 |
| 2000 | 26.71 | 102 |
| 1999 | 17.89 | 126 |
| 1998 | 22.81 | 108 |
| 1997 | 30.08 | 89 |
| 1996 | 25.73 | 96 |
| 1995 | 26.79 | 94 |
| 1994 | 23.41 | 108 |
| 1993 | 22.91 | 107 |
| 1992 | 16.52 | 121 |
| 1991 | 17.03 | 118 |
| 1990 | 23.14 | 90 |
| 1989 | 52.14 | 39 |
| 1988 | 44.49 | 49 |
| 1987 | 42.7 | 48 |
| 1986 | 36.42 | 55 |