| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 2.04 | 65 |
| 2015 | 0.46 | 110 |
| 2014 | 1.13 | 105 |
| 2013 | 3.08 | 69 |
| 2012 | 3.5 | 68 |
| 2011 | 2.76 | 68 |
| 2010 | 2.97 | 71 |
| 2009 | 4.65 | 76 |
| 2008 | 5.8 | 53 |
| 2007 | 4.03 | 78 |
| 2006 | 4.88 | 71 |
| 2005 | 5.15 | 53 |
| 2004 | 5.24 | 43 |
| 2003 | 5.65 | 39 |
| 2002 | 4.57 | 57 |
| 2001 | 3.12 | 83 |
| 2000 | 2.93 | 68 |
| 1999 | 0.43 | 102 |
| 1998 | -2.22 | 112 |
| 1997 | 2.14 | 76 |
| 1996 | 3.81 | 51 |
| 1995 | -6.01 | 108 |
| 1994 | 0.81 | 72 |
| 1993 | 1.17 | 70 |
| 1992 | 1.87 | 58 |
| 1991 | 2.26 | 66 |
| 1990 | 2.26 | 52 |
| 1989 | 4.02 | 40 |
| 1988 | 1.66 | 54 |
| 1987 | 3.74 | 40 |
| 1986 | 2.29 | 54 |