| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 3.82 | 45 |
| 2015 | 4.96 | 45 |
| 2014 | 7.55 | 28 |
| 2013 | -3.54 | 159 |
| 2012 | -9.35 | 162 |
| 2011 | 3.94 | 86 |
| 2010 | 6.91 | 32 |
| 2009 | 12.83 | 16 |
| 2008 | 8.62 | 32 |
| 2007 | 1.23 | 112 |
| 2006 | 13.07 | 8 |
| 2005 | 0.27 | 112 |
| 2004 | 11.19 | 25 |
| 2003 | 11.75 | 14 |
| 2002 | 24.93 | 4 |
| 2001 | 1.77 | 87 |
| 2000 | 5.38 | 49 |
| 1999 | -29.3 | 161 |
| 1998 | 12.99 | 10 |
| 1997 | -8.49 | 146 |
| 1996 | 3.49 | 73 |
| 1995 | 1.65 | 83 |
| 1994 | -13.96 | 125 |
| 1993 | -22.69 | 131 |
| 1992 | 43.3 | 1 |
| 1991 | 9.56 | 15 |
| 1990 | 31.11 | 2 |
| 1989 | -24.47 | 111 |
| 1988 | 32.61 | 5 |
| 1987 | 18.51 | 6 |
| 1986 | 6.5 | 24 |