| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2015 | 5.48 | 46 |
| 2014 | 4.17 | 72 |
| 2013 | 1.5 | 116 |
| 2012 | -35.78 | 180 |
| 2011 | 42.85 | 2 |
| 2010 | -41.52 | 176 |
| 2009 | -13.59 | 157 |
| 2008 | 44.22 | 2 |
| 2007 | 44.69 | 2 |
| 2006 | 18.55 | 10 |
| 2005 | -18.18 | 170 |
| 2004 | -13.23 | 169 |
| 2003 | 11.46 | 29 |
| 2002 | 28.79 | 3 |
| 2001 | 5.31 | 46 |
| 2000 | 13.26 | 16 |
| 1999 | 0.79 | 116 |
| 1998 | 15.3 | 9 |
| 1997 | 24.42 | 3 |
| 1996 | -15.43 | 153 |
| 1995 | -13.03 | 131 |
| 1994 | 4.83 | 56 |
| 1993 | -13.58 | 122 |
| 1992 | 40.93 | 2 |
| 1991 | 9.65 | 22 |