| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 55.922 | 81 |
| 2015 | 55.633 | 107 |
| 2014 | 55.13 | 108 |
| 2013 | 54.14 | 115 |
| 2012 | 55.21 | 110 |
| 2011 | 50.524 | 126 |
| 2010 | 51.295 | 125 |
| 2009 | 52.359 | 119 |
| 2008 | 49.445 | 124 |
| 2007 | 49.638 | 122 |
| 2006 | 47.172 | 129 |
| 2005 | 45.659 | 133 |
| 2004 | 42.593 | 140 |
| 2003 | 40.62 | 148 |
| 2002 | 38.973 | 149 |
| 2001 | 33.779 | 160 |
| 2000 | 31.864 | 161 |
| 1999 | 37.342 | 143 |
| 1998 | 37.703 | 141 |
| 1997 | 32.577 | 149 |
| 1996 | 31.965 | 146 |
| 1995 | 36.555 | 135 |
| 1994 | 33.668 | 125 |
| 1993 | 26.987 | 127 |
| 1992 | 23.164 | 131 |
| 1991 | 27.566 | 122 |
| 1990 | 31.442 | 113 |