| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 3.13 | 58 |
| 2015 | 5.12 | 44 |
| 2014 | 3.82 | 65 |
| 2013 | 4.69 | 58 |
| 2012 | 4.15 | 58 |
| 2011 | 3.06 | 103 |
| 2010 | -1.18 | 120 |
| 2009 | 3.68 | 61 |
| 2008 | 2.61 | 102 |
| 2007 | -.5 | 127 |
| 2006 | 4.26 | 66 |
| 2005 | 4.98 | 51 |
| 2004 | 0.25 | 128 |
| 2003 | 8.71 | 28 |
| 2002 | 0.45 | 105 |
| 2001 | 3.46 | 68 |
| 2000 | 3.48 | 67 |
| 1999 | 2.51 | 89 |
| 1998 | -4.43 | 132 |
| 1997 | 4.55 | 41 |
| 1996 | 6.7 | 36 |
| 1995 | 1.4 | 85 |
| 1994 | 6.67 | 30 |
| 1993 | 4.14 | 40 |
| 1992 | -4.24 | 100 |
| 1991 | 9.86 | 13 |
| 1990 | 4.61 | 47 |
| 1989 | -1.53 | 87 |
| 1988 | 4.12 | 48 |
| 1987 | 2.08 | 58 |
| 1986 | -3.16 | 95 |