| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 5.25 | 105 |
| 2015 | 5.25 | 108 |
| 2014 | 5.25 | 126 |
| 2013 | 5.25 | 131 |
| 2012 | 5.25 | 127 |
| 2011 | 5.25 | 135 |
| 2010 | 5.25 | 141 |
| 2009 | 5.25 | 133 |
| 2008 | 5.427 | 140 |
| 2007 | 7.808 | 122 |
| 2006 | 8.759 | 101 |
| 2005 | 7.048 | 122 |
| 2004 | 6.012 | 132 |
| 2003 | 6 | 129 |
| 2002 | 6.108 | 136 |
| 2001 | 7.989 | 120 |
| 2000 | 9.89 | 111 |
| 1999 | 9.457 | 114 |
| 1998 | 10.973 | 108 |
| 1997 | 9.727 | 112 |
| 1996 | 9.557 | 114 |
| 1995 | 9.902 | 111 |
| 1994 | 7.953 | 115 |
| 1993 | 6.5 | 115 |
| 1992 | 7.25 | 107 |
| 1991 | 9.417 | 90 |
| 1990 | 10.417 | 81 |
| 1989 | 10.542 | 76 |
| 1988 | 8.063 | 94 |
| 1987 | 6.625 | 100 |