| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2015 | 11.595 | 13 |
| 2014 | 13.175 | 7 |
| 2013 | 18.41 | 2 |
| 2012 | 11.076 | 15 |
| 2011 | 4.113 | 73 |
| 2010 | 3.604 | 84 |
| 2009 | 3.5 | 93 |
| 2008 | 3.5 | 123 |
| 2007 | 5.974 | 69 |
| 2006 | 11 | 13 |
| 2005 | 10.917 | 16 |
| 2004 | 13.729 | 10 |
| 2003 | 25.125 | 5 |
| 2002 | 28.083 | 6 |
| 2001 | 34.958 | 3 |
| 2000 | 33.25 | 6 |
| 1999 | 33.208 | 5 |
| 1998 | 19.063 | 21 |
| 1997 | 10.208 | 58 |
| 1996 | 26.333 | 19 |
| 1995 | 37.271 | 14 |
| 1994 | 25 | 22 |
| 1993 | 21.75 | 26 |
| 1992 | 16.5 | 32 |
| 1991 | 12.5 | 42 |
| 1990 | 12.104 | 40 |
| 1989 | 12.75 | 37 |
| 1988 | 13.5 | 27 |
| 1987 | 14.25 | 23 |
| 1986 | 12.75 | 24 |