| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2015 | 1.39 | 93 |
| 2014 | 2.24 | 94 |
| 2013 | 1.88 | 115 |
| 2012 | 6.09 | 55 |
| 2011 | 5.8 | 71 |
| 2010 | 2.88 | 104 |
| 2009 | 6.87 | 45 |
| 2008 | 12.66 | 44 |
| 2007 | -10.07 | 176 |
| 2006 | 53.23 | 2 |
| 2005 | 36.96 | 2 |
| 2004 | 26.96 | 4 |
| 2003 | 33.62 | 5 |
| 2002 | 19.32 | 13 |
| 2001 | 16.37 | 17 |
| 2000 | 4.98 | 60 |
| 1999 | 12.58 | 27 |
| 1998 | 14.77 | 26 |
| 1997 | 23.06 | 21 |
| 1996 | -16.12 | 164 |
| 1995 | 387.31 | 5 |
| 1994 | 448.5 | 9 |
| 1993 | 207.69 | 12 |
| 1992 | 83.62 | 10 |
| 1991 | 180.95 | 7 |