| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 1.437 | 99 |
| 2015 | 1.419 | 113 |
| 2014 | 1.419 | 124 |
| 2013 | 1.343 | 131 |
| 2012 | 1.334 | 135 |
| 2011 | 1.338 | 139 |
| 2010 | 1.265 | 139 |
| 2009 | 1.663 | 137 |
| 2008 | 1.905 | 150 |
| 2007 | 1.905 | 156 |
| 2006 | 1.842 | 151 |
| 2005 | 1.917 | 141 |
| 2004 | 1.792 | 132 |
| 2003 | 2.017 | 130 |
| 2002 | 2.492 | 128 |
| 2001 | 4.362 | 106 |
| 2000 | 6.83 | 78 |
| 1999 | 7.333 | 79 |
| 1998 | 7.8 | 80 |
| 1997 | 8.033 | 75 |
| 1996 | 8.8 | 74 |
| 1995 | 8.708 | 71 |