| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 49.61 | 78 |
| 2015 | 49.68 | 79 |
| 2014 | 48.88 | 82 |
| 2013 | 48.28 | 83 |
| 2012 | 46.74 | 95 |
| 2011 | 45.85 | 101 |
| 2010 | 45.01 | 103 |
| 2009 | 47.1 | 91 |
| 2008 | 51.24 | 71 |
| 2007 | 50.78 | 70 |
| 2006 | 48.82 | 84 |
| 2005 | 45.88 | 91 |
| 2004 | 44.45 | 99 |
| 2003 | 44.93 | 98 |
| 2002 | 45.19 | 94 |
| 2001 | 43.94 | 97 |
| 2000 | 42.4 | 109 |
| 1999 | 43.07 | 104 |
| 1998 | 44.57 | 90 |
| 1997 | 44.34 | 92 |
| 1996 | 41.2 | 107 |
| 1995 | 49.25 | 64 |
| 1994 | 47.4 | 74 |
| 1993 | 48.72 | 68 |
| 1992 | 50.97 | 58 |
| 1991 | 51.99 | 53 |