| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 2.68 | 58 |
| 2015 | 3.15 | 51 |
| 2014 | 6 | 13 |
| 2013 | 4.73 | 30 |
| 2012 | 7.74 | 10 |
| 2011 | 8.63 | 12 |
| 2010 | 7.66 | 15 |
| 2009 | -2.39 | 115 |
| 2008 | 3.63 | 74 |
| 2007 | 13.83 | 6 |
| 2006 | 10.81 | 14 |
| 2005 | 11.04 | 11 |
| 2004 | 7.25 | 37 |
| 2003 | 12.5 | 5 |
| 2002 | 6.19 | 24 |
| 2001 | 5.57 | 25 |
| 2000 | 2.63 | 109 |
| 1999 | 3.67 | 56 |
| 1998 | 4.12 | 52 |
| 1997 | 12.58 | 6 |
| 1996 | 14.04 | 4 |
| 1995 | 5.37 | 37 |
| 1994 | -9.49 | 169 |
| 1993 | -29.84 | 178 |
| 1992 | -45.33 | 177 |
| 1991 | -21.65 | 173 |
| 1990 | -14.77 | 163 |
| 1989 | -7.44 | 157 |
| 1988 | 4.52 | 48 |
| 1987 | 0.45 | 99 |
| 1986 | -8.99 | 153 |