| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 49.9 | 77 |
| 2015 | 50.3 | 77 |
| 2014 | 50.69 | 76 |
| 2013 | 51.08 | 76 |
| 2012 | 51.46 | 76 |
| 2011 | 51.83 | 77 |
| 2010 | 52.2 | 77 |
| 2009 | 52.56 | 77 |
| 2008 | 52.91 | 78 |
| 2007 | 53.26 | 78 |
| 2006 | 53.6 | 79 |
| 2005 | 53.95 | 78 |
| 2004 | 54.29 | 79 |
| 2003 | 54.64 | 77 |
| 2002 | 54.98 | 78 |
| 2001 | 55.33 | 79 |
| 2000 | 55.67 | 79 |
| 1999 | 56.01 | 79 |
| 1998 | 56.35 | 79 |
| 1997 | 56.7 | 79 |
| 1996 | 57.04 | 78 |
| 1995 | 54.04 | 88 |
| 1994 | 51.02 | 94 |
| 1993 | 47.99 | 106 |
| 1992 | 44.98 | 115 |
| 1991 | 42 | 126 |
| 1990 | 44.58 | 119 |
| 1989 | 47.19 | 111 |
| 1988 | 49.81 | 105 |
| 1987 | 52.43 | 99 |
| 1986 | 55.04 | 93 |