| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 1.35 | 102 |
| 2015 | 1.417 | 115 |
| 2014 | 1.958 | 111 |
| 2013 | 2.883 | 96 |
| 2012 | 2.796 | 107 |
| 2011 | 2.278 | 116 |
| 2010 | 1.013 | 149 |
| 2009 | 1.042 | 153 |
| 2008 | 2.479 | 140 |
| 2007 | 2.875 | 140 |
| 2006 | 4.438 | 86 |
| 2005 | 1.875 | 143 |
| 2004 | 1 | 151 |
| 2003 | 1.333 | 140 |
| 2002 | 1.979 | 134 |
| 2001 | 2.542 | 135 |
| 2000 | 3.292 | 127 |
| 1999 | 4.771 | 107 |
| 1998 | 10.646 | 56 |
| 1997 | 10.521 | 56 |
| 1996 | 10.333 | 64 |
| 1995 | 11.583 | 53 |
| 1994 | 8.458 | 64 |
| 1993 | 8.625 | 59 |
| 1992 | 8.875 | 58 |
| 1991 | 13.667 | 37 |
| 1990 | 12.25 | 39 |
| 1989 | 9.5 | 52 |
| 1988 | 9.5 | 47 |
| 1987 | 9.5 | 42 |
| 1986 | 9.75 | 43 |