| 时间 |
值 （%） |
世界排名 |
| 2010 |
3 |
105 |
| 2009 |
3.25 |
103 |
| 2008 |
4.667 |
87 |
| 2007 |
5 |
85 |
| 2006 |
5 |
70 |
| 2005 |
4.75 |
73 |
| 2004 |
7.854 |
36 |
| 2003 |
6.583 |
56 |
| 2002 |
6 |
64 |
| 2001 |
6.5 |
65 |
| 2000 |
12 |
31 |
| 1999 |
13.417 |
30 |
| 1998 |
17.788 |
25 |
| 1996 |
16 |
37 |
| 1995 |
14 |
41 |
| 1994 |
12 |
39 |
| 1993 |
13.333 |
39 |
| 1992 |
15 |
36 |
| 1991 |
23.5 |
22 |
| 1990 |
30 |
14 |
| 1989 |
30 |
13 |