| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2007 | 121.5 | 1 |
| 2006 | 203.375 | 1 |
| 2005 | 91.075 | 1 |
| 2004 | 103.208 | 1 |
| 2003 | 35.917 | 2 |
| 2002 | 18.375 | 12 |
| 2001 | 13.948 | 23 |
| 2000 | 50.167 | 2 |
| 1999 | 38.507 | 3 |
| 1998 | 29.059 | 13 |
| 1997 | 18.598 | 23 |
| 1996 | 21.579 | 24 |
| 1995 | 25.918 | 21 |
| 1994 | 26.751 | 21 |
| 1993 | 29.446 | 16 |
| 1992 | 28.625 | 17 |
| 1991 | 14.195 | 36 |
| 1990 | 8.803 | 55 |
| 1989 | 8.852 | 57 |
| 1988 | 9.679 | 44 |
| 1987 | 9.577 | 41 |
| 1986 | 10.279 | 37 |