| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2015 | 37.14 | 4 |
| 2014 | 25.28 | 3 |
| 2013 | 1.5 | 128 |
| 2012 | 5.77 | 59 |
| 2011 | 1.3 | 169 |
| 2010 | 1.49 | 141 |
| 2009 | 3.52 | 79 |
| 2008 | 9.27 | 82 |
| 2007 | 0.93 | 166 |
| 2006 | 6.7 | 62 |
| 2005 | 2.88 | 118 |
| 2004 | -2.07 | 169 |
| 2003 | 4.13 | 76 |
| 2002 | 2.33 | 106 |
| 2001 | 3.83 | 89 |
| 2000 | 3.2 | 90 |
| 1999 | -1.41 | 156 |
| 1998 | -1.89 | 163 |
| 1997 | 1.61 | 141 |
| 1996 | 3.72 | 111 |
| 1995 | 19.19 | 50 |
| 1994 | 24.57 | 50 |
| 1993 | -2.92 | 150 |
| 1992 | -1.03 | 135 |
| 1991 | -2.76 | 136 |
| 1990 | -.01 | 131 |
| 1989 | 0.69 | 125 |
| 1988 | -3.96 | 129 |
| 1987 | -6.99 | 127 |
| 1986 | 2.25 | 90 |