| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 54.53 | 84 |
| 2015 | 54.53 | 84 |
| 2014 | 54.5 | 85 |
| 2013 | 54.25 | 86 |
| 2012 | 53.66 | 88 |
| 2011 | 53.61 | 87 |
| 2010 | 52.76 | 90 |
| 2009 | 52.47 | 94 |
| 2008 | 52.05 | 94 |
| 2007 | 51.91 | 93 |
| 2006 | 51.37 | 95 |
| 2005 | 50.55 | 99 |
| 2004 | 50.19 | 101 |
| 2003 | 49.62 | 104 |
| 2002 | 49.71 | 103 |
| 2001 | 49.6 | 104 |
| 2000 | 49.41 | 96 |
| 1999 | 49.35 | 96 |
| 1998 | 49.04 | 98 |
| 1997 | 48.6 | 101 |
| 1996 | 48.14 | 102 |
| 1995 | 47.83 | 102 |
| 1994 | 47.57 | 102 |
| 1993 | 47.67 | 97 |
| 1992 | 47.73 | 95 |
| 1991 | 47.99 | 94 |
| 1990 | 43.42 | 116 |