| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 51.21 | 104 |
| 2015 | 51.1 | 104 |
| 2014 | 50.97 | 105 |
| 2013 | 51 | 105 |
| 2012 | 50.08 | 111 |
| 2011 | 49.46 | 111 |
| 2010 | 49.27 | 113 |
| 2009 | 49.54 | 108 |
| 2008 | 49.39 | 107 |
| 2007 | 49.92 | 105 |
| 2006 | 50.65 | 100 |
| 2005 | 50.81 | 98 |
| 2004 | 50.73 | 96 |
| 2003 | 51.03 | 94 |
| 2002 | 51.19 | 94 |
| 2001 | 51.46 | 91 |
| 2000 | 51.76 | 87 |
| 1999 | 52.19 | 82 |
| 1998 | 51.92 | 81 |
| 1997 | 51.73 | 83 |
| 1996 | 51.75 | 81 |
| 1995 | 52.31 | 80 |
| 1994 | 52.6 | 78 |
| 1993 | 52.34 | 81 |
| 1992 | 52.25 | 78 |
| 1991 | 52.16 | 78 |
| 1990 | 51.72 | 79 |