| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 61.13 | 50 |
| 2015 | 61.18 | 50 |
| 2014 | 61.21 | 50 |
| 2013 | 61.38 | 50 |
| 2012 | 61.61 | 46 |
| 2011 | 61.53 | 48 |
| 2010 | 61.42 | 49 |
| 2009 | 62.18 | 44 |
| 2008 | 62.79 | 43 |
| 2007 | 61.56 | 48 |
| 2006 | 60.43 | 51 |
| 2005 | 60.31 | 50 |
| 2004 | 60.45 | 48 |
| 2003 | 60.5 | 48 |
| 2002 | 60.88 | 45 |
| 2001 | 60.38 | 46 |
| 2000 | 60.24 | 45 |
| 1999 | 59.98 | 46 |
| 1998 | 59.67 | 46 |
| 1997 | 58.8 | 48 |
| 1996 | 57.61 | 53 |
| 1995 | 56.08 | 60 |
| 1994 | 55.17 | 64 |
| 1993 | 54.78 | 67 |
| 1992 | 54.71 | 68 |
| 1991 | 55.08 | 67 |
| 1990 | 55.23 | 67 |