| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 49.56 | 114 |
| 2015 | 49.4 | 114 |
| 2014 | 49.23 | 115 |
| 2013 | 49.24 | 114 |
| 2012 | 51.78 | 99 |
| 2011 | 52.83 | 94 |
| 2010 | 52.22 | 94 |
| 2009 | 52.53 | 93 |
| 2008 | 53.18 | 88 |
| 2007 | 53.84 | 84 |
| 2006 | 54.51 | 80 |
| 2005 | 54.14 | 78 |
| 2004 | 53.62 | 79 |
| 2003 | 54.4 | 74 |
| 2002 | 55.3 | 68 |
| 2001 | 55.78 | 67 |
| 2000 | 56.22 | 63 |
| 1999 | 56.63 | 61 |
| 1998 | 56.99 | 59 |
| 1997 | 57.29 | 57 |
| 1996 | 57.54 | 54 |
| 1995 | 57.75 | 53 |
| 1994 | 57.87 | 50 |
| 1993 | 57.97 | 52 |
| 1992 | 58.08 | 50 |
| 1991 | 58.22 | 52 |
| 1990 | 58.4 | 53 |