| 时间 | 值 | 世界排名 |
|---|---|---|
| 2016 | 24.2 | 74 |
| 2015 | 24.8 | 76 |
| 2014 | 12.2 | 85 |
| 2013 | 12.2 | 85 |
| 2012 | 0 | 147 |
| 2011 | 0 | 147 |
| 2010 | 0 | 148 |
| 2009 | 8 | 87 |
| 2008 | 10 | 91 |
| 2007 | 10 | 90 |
| 2006 | 11.3 | 87 |
| 2005 | 10 | 90 |
| 2004 | 9.8 | 95 |
| 2003 | 10 | 96 |
| 2002 | 8.7 | 99 |
| 2001 | 2.8 | 121 |
| 2000 | 8.8 | 113 |
| 1999 | 9.7 | 111 |
| 1998 | 27 | 81 |
| 1997 | 5 | 117 |
| 1996 | 4.7 | 113 |
| 1995 | 1.9 | 123 |
| 1994 | 7.2 | 110 |
| 1993 | 9.8 | 104 |
| 1992 | 10.3 | 103 |
| 1991 | 27.5 | 64 |
| 1990 | 23.5 | 70 |
| 1989 | 17 | 88 |
| 1988 | 29.5 | 63 |
| 1987 | 37.2 | 56 |
| 1986 | 32.4 | 56 |