| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 62.58 | 43 |
| 2015 | 62.68 | 43 |
| 2014 | 62.7 | 43 |
| 2013 | 61.94 | 45 |
| 2012 | 61.31 | 50 |
| 2011 | 60.95 | 52 |
| 2010 | 60.81 | 52 |
| 2009 | 61.63 | 48 |
| 2008 | 61.44 | 49 |
| 2007 | 60.1 | 53 |
| 2006 | 59.89 | 54 |
| 2005 | 59.46 | 53 |
| 2004 | 59.24 | 52 |
| 2003 | 59.56 | 51 |
| 2002 | 59.37 | 51 |
| 2001 | 58.96 | 51 |
| 2000 | 57.72 | 56 |
| 1999 | 58.28 | 53 |
| 1998 | 58.01 | 54 |
| 1997 | 56.92 | 60 |
| 1996 | 57 | 56 |
| 1995 | 56.11 | 59 |
| 1994 | 56.32 | 58 |
| 1993 | 57.17 | 55 |
| 1992 | 57.38 | 57 |
| 1991 | 56.89 | 59 |
| 1990 | 55.97 | 64 |