| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 52.24 | 98 |
| 2015 | 52.16 | 101 |
| 2014 | 52.05 | 100 |
| 2013 | 51.96 | 100 |
| 2012 | 51.17 | 102 |
| 2011 | 52.06 | 98 |
| 2010 | 52.42 | 93 |
| 2009 | 52.38 | 95 |
| 2008 | 52.32 | 93 |
| 2007 | 52.27 | 92 |
| 2006 | 52.22 | 91 |
| 2005 | 52.15 | 91 |
| 2004 | 52.14 | 90 |
| 2003 | 51.97 | 90 |
| 2002 | 52.05 | 86 |
| 2001 | 51.66 | 90 |
| 2000 | 52.15 | 84 |
| 1999 | 52.58 | 79 |
| 1998 | 52.94 | 79 |
| 1997 | 53.28 | 75 |
| 1996 | 53.63 | 74 |
| 1995 | 54.01 | 71 |
| 1994 | 54.35 | 70 |
| 1993 | 54.69 | 68 |
| 1992 | 55.16 | 66 |
| 1991 | 55.65 | 65 |
| 1990 | 56.09 | 63 |