| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 3.55 | 32 |
| 2015 | 3.68 | 37 |
| 2014 | 3.6 | 45 |
| 2013 | 3.72 | 50 |
| 2012 | 5.24 | 30 |
| 2011 | 5.03 | 44 |
| 2010 | 3.12 | 87 |
| 2009 | -4.52 | 150 |
| 2008 | 2.1 | 102 |
| 2007 | 3.71 | 108 |
| 2006 | 2.45 | 134 |
| 2005 | 2.93 | 105 |
| 2004 | 3.95 | 89 |
| 2003 | 1.17 | 137 |
| 2002 | -.63 | 153 |
| 2001 | 1.47 | 104 |
| 2000 | 2.5 | 116 |
| 1999 | 5.31 | 28 |
| 1998 | 1.94 | 111 |
| 1997 | 2.1 | 110 |
| 1996 | 4.34 | 58 |
| 1995 | 3.81 | 54 |
| 1994 | 1.19 | 104 |
| 1993 | -2.54 | 144 |
| 1992 | -1.8 | 122 |
| 1991 | -2.36 | 128 |
| 1990 | -2.25 | 121 |
| 1989 | -3.8 | 143 |
| 1988 | -14.34 | 162 |
| 1987 | -2.91 | 137 |
| 1986 | -3.31 | 141 |