| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 1.46 | 62 |
| 2015 | 0.9 | 103 |
| 2014 | 0.42 | 109 |
| 2013 | 0.72 | 102 |
| 2012 | 3.43 | 51 |
| 2011 | 3.24 | 61 |
| 2010 | 4.03 | 44 |
| 2009 | -7.95 | 143 |
| 2008 | 0.26 | 106 |
| 2007 | 1.43 | 108 |
| 2006 | 3.96 | 62 |
| 2005 | 2.98 | 83 |
| 2004 | 4.23 | 62 |
| 2003 | -.12 | 113 |
| 2002 | 0.14 | 102 |
| 2001 | 0.68 | 92 |
| 2000 | 4.44 | 29 |
| 1999 | 3.17 | 45 |
| 1998 | 4.13 | 45 |
| 1997 | 4.3 | 38 |
| 1996 | 2.55 | 69 |
| 1995 | -10.42 | 116 |
| 1994 | 2.65 | 42 |
| 1993 | 13.29 | 4 |
| 1992 | 2.61 | 31 |
| 1991 | 2.62 | 38 |
| 1990 | 4.36 | 21 |
| 1989 | 5.21 | 21 |
| 1988 | -.15 | 63 |
| 1987 | -2.08 | 69 |
| 1986 | -4.53 | 75 |