| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 70.58 | 28 |
| 2015 | 70.81 | 28 |
| 2014 | 70.89 | 27 |
| 2013 | 70.68 | 27 |
| 2012 | 71.99 | 25 |
| 2011 | 71.67 | 24 |
| 2010 | 71.89 | 23 |
| 2009 | 71.55 | 24 |
| 2008 | 70.06 | 28 |
| 2007 | 69.41 | 28 |
| 2006 | 64.5 | 48 |
| 2005 | 62.4 | 57 |
| 2004 | 62.2 | 54 |
| 2003 | 62.93 | 48 |
| 2002 | 65.39 | 42 |
| 2001 | 67.26 | 34 |
| 2000 | 64.9 | 44 |
| 1999 | 66.34 | 36 |
| 1998 | 65.28 | 37 |
| 1997 | 64.44 | 41 |
| 1996 | 63.05 | 51 |
| 1995 | 61.63 | 54 |
| 1994 | 59.58 | 69 |
| 1993 | 58.43 | 77 |
| 1992 | 55.76 | 99 |
| 1991 | 57.24 | 89 |