| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2015 | 0.993 | 125 |
| 2014 | 0.982 | 136 |
| 2013 | 1.058 | 138 |
| 2012 | 1.084 | 140 |
| 2011 | 1.023 | 145 |
| 2010 | 1.225 | 140 |
| 2009 | 1.582 | 139 |
| 2008 | 1.648 | 152 |
| 2007 | 4.485 | 94 |
| 2006 | 4.37 | 88 |
| 2005 | 3.143 | 108 |
| 2004 | 1.543 | 138 |
| 2003 | 1.475 | 138 |
| 2002 | 1.335 | 140 |
| 2001 | 2.708 | 132 |
| 2000 | 5.818 | 90 |
| 1999 | 4.795 | 106 |
| 1998 | 4.735 | 113 |
| 1997 | 5.275 | 100 |
| 1996 | 5.175 | 110 |
| 1995 | 5.7 | 98 |
| 1994 | 4 | 112 |
| 1993 | 3.025 | 118 |
| 1992 | 3.625 | 111 |
| 1990 | 7.5 | 73 |
| 1989 | 7.333 | 74 |
| 1988 | 5.5 | 86 |
| 1987 | 5 | 88 |
| 1986 | 5.583 | 86 |