| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2015 | 1.85 | 126 |
| 2014 | 0.5 | 168 |
| 2013 | 1.15 | 151 |
| 2012 | 6.63 | 32 |
| 2011 | 9.63 | 14 |
| 2010 | -2.37 | 188 |
| 2009 | -7.08 | 188 |
| 2008 | 2.48 | 130 |
| 2007 | 5.99 | 96 |
| 2006 | 7.52 | 56 |
| 2005 | 10.08 | 18 |
| 2004 | 10.76 | 15 |
| 2003 | 17.32 | 1 |
| 2002 | 3 | 108 |
| 2001 | 0.73 | 159 |
| 2000 | 4.69 | 85 |
| 1999 | -1.79 | 175 |
| 1998 | 3.66 | 105 |
| 1997 | 2.47 | 140 |
| 1996 | 0.61 | 171 |
| 1995 | 4.86 | 73 |
| 1994 | 8.44 | 19 |
| 1993 | 33.99 | 1 |
| 1989 | 25.9 | 1 |
| 1988 | -10.05 | 161 |
| 1987 | 8.14 | 26 |
| 1986 | 8.57 | 20 |