| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 58.97 | 19 |
| 2015 | 59.09 | 19 |
| 2014 | 59.17 | 19 |
| 2013 | 59.67 | 19 |
| 2012 | 60.24 | 18 |
| 2011 | 60.76 | 17 |
| 2010 | 61.34 | 17 |
| 2009 | 62.06 | 17 |
| 2008 | 62.69 | 19 |
| 2007 | 63.42 | 16 |
| 2006 | 64.16 | 15 |
| 2005 | 65.08 | 14 |
| 2004 | 64.26 | 13 |
| 2003 | 65.48 | 13 |
| 2002 | 66.61 | 12 |
| 2001 | 67.23 | 12 |
| 2000 | 67.79 | 13 |
| 1999 | 68.33 | 10 |
| 1998 | 69.02 | 9 |
| 1997 | 69.26 | 10 |
| 1996 | 69.95 | 11 |
| 1995 | 69.44 | 11 |
| 1994 | 70.07 | 10 |
| 1993 | 70.76 | 11 |
| 1992 | 71.17 | 11 |
| 1991 | 71.89 | 8 |