| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 1.4 | 101 |
| 2015 | 2.127 | 92 |
| 2014 | 2.429 | 100 |
| 2013 | 1.521 | 127 |
| 2012 | 1.882 | 126 |
| 2011 | 1.698 | 132 |
| 2010 | 1.758 | 125 |
| 2009 | 3.203 | 109 |
| 2008 | 2.82 | 134 |
| 2007 | 2.336 | 152 |
| 2006 | 1.715 | 155 |
| 2005 | 1.714 | 149 |
| 2004 | 1.873 | 129 |
| 2003 | 1.527 | 136 |
| 2002 | 1.889 | 135 |
| 2001 | 3.229 | 121 |
| 2000 | 3.742 | 120 |
| 1999 | 4.311 | 120 |
| 1998 | 4.621 | 115 |
| 1997 | 4.297 | 119 |
| 1996 | 5.585 | 100 |
| 1995 | 5.525 | 100 |
| 1994 | 6.519 | 83 |
| 1993 | 379.313 | 2 |
| 1992 | 658.505 | 2 |