| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 48.66 | 83 |
| 2015 | 48 | 87 |
| 2014 | 47.2 | 95 |
| 2013 | 46.77 | 95 |
| 2012 | 45.98 | 102 |
| 2011 | 45.56 | 102 |
| 2010 | 45.11 | 102 |
| 2009 | 45.71 | 101 |
| 2008 | 46.61 | 94 |
| 2007 | 46.55 | 94 |
| 2006 | 46.17 | 92 |
| 2005 | 45.83 | 92 |
| 2004 | 45.87 | 90 |
| 2003 | 46.15 | 89 |
| 2002 | 46.85 | 83 |
| 2001 | 46.57 | 84 |
| 2000 | 46.37 | 83 |
| 1999 | 46.95 | 80 |
| 1998 | 48.01 | 73 |
| 1997 | 49.09 | 67 |
| 1996 | 49.34 | 66 |
| 1995 | 49.8 | 62 |
| 1994 | 49.87 | 63 |
| 1993 | 49.5 | 64 |
| 1992 | 50.3 | 60 |
| 1991 | 51.1 | 58 |