| 时间 | 值 | 世界排名 |
|---|---|---|
| 2016 | 3.1 | 102 |
| 2015 | 3 | 102 |
| 2014 | 2 | 109 |
| 2013 | 2.4 | 103 |
| 2012 | 1.6 | 116 |
| 2011 | 1.4 | 120 |
| 2010 | 1.9 | 109 |
| 2003 | 0 | 148 |
| 2002 | 0 | 146 |
| 2001 | 7.4 | 107 |
| 2000 | 12.3 | 104 |
| 1999 | 13.7 | 97 |
| 1998 | 13.8 | 93 |
| 1997 | 15.6 | 96 |
| 1996 | 17.2 | 87 |
| 1995 | 16 | 91 |
| 1994 | 15.1 | 91 |
| 1993 | 14.9 | 88 |
| 1992 | 15.8 | 87 |
| 1991 | 16.8 | 78 |
| 1990 | 18.4 | 75 |
| 1989 | 18.6 | 76 |
| 1988 | 16.5 | 77 |
| 1987 | 16.9 | 75 |
| 1986 | 17.7 | 71 |