| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 1.85 | 80 |
| 2015 | 1.77 | 87 |
| 2014 | 1.4 | 112 |
| 2013 | 0.42 | 139 |
| 2012 | -.73 | 159 |
| 2011 | 7.46 | 20 |
| 2010 | -3.56 | 188 |
| 2009 | -5.36 | 159 |
| 2008 | 6.97 | 23 |
| 2007 | 5.25 | 72 |
| 2006 | 1.03 | 169 |
| 2005 | -5.06 | 197 |
| 2004 | -2.62 | 194 |
| 2003 | -4.64 | 189 |
| 2002 | 6.51 | 21 |
| 2001 | 0.65 | 128 |
| 2000 | -1.76 | 173 |
| 1999 | -1.97 | 160 |
| 1998 | 15.14 | 5 |
| 1997 | 9.75 | 11 |
| 1996 | -6.23 | 186 |
| 1995 | -5.42 | 169 |
| 1994 | 9.88 | 7 |
| 1993 | 3.58 | 43 |
| 1992 | 2.16 | 63 |
| 1991 | 3.04 | 43 |