| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 2 | 112 |
| 2015 | 1.4 | 142 |
| 2014 | 5.58 | 44 |
| 2013 | 6.09 | 33 |
| 2012 | 5.8 | 44 |
| 2011 | 4.7 | 83 |
| 2010 | 4.77 | 89 |
| 2009 | -1.04 | 114 |
| 2008 | 1.08 | 154 |
| 2007 | 2.82 | 164 |
| 2006 | 18.87 | 5 |
| 2005 | 8.97 | 28 |
| 2004 | 5.75 | 83 |
| 2003 | 5.98 | 61 |
| 2002 | 0.67 | 154 |
| 2001 | 2.01 | 128 |
| 2000 | -.43 | 178 |
| 1999 | 7.71 | 25 |
| 1998 | 2.78 | 130 |
| 1997 | -4.04 | 186 |
| 1996 | 5.82 | 62 |
| 1995 | 9.82 | 12 |
| 1994 | -3.06 | 164 |
| 1993 | 5.87 | 44 |
| 1992 | 1.87 | 90 |
| 1991 | 1.79 | 96 |
| 1990 | -1.77 | 140 |
| 1989 | 4.78 | 59 |
| 1988 | 1.72 | 124 |
| 1987 | 1.9 | 109 |
| 1986 | 5.71 | 42 |