| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 69.62 | 30 |
| 2015 | 69.6 | 30 |
| 2014 | 69.59 | 30 |
| 2013 | 69.77 | 29 |
| 2012 | 69.93 | 27 |
| 2011 | 70.21 | 25 |
| 2010 | 70.52 | 23 |
| 2009 | 70.78 | 22 |
| 2008 | 70.93 | 21 |
| 2007 | 71.11 | 23 |
| 2006 | 71.32 | 23 |
| 2005 | 71.3 | 22 |
| 2004 | 71.31 | 21 |
| 2003 | 71.27 | 22 |
| 2002 | 71.18 | 22 |
| 2001 | 70.98 | 24 |
| 2000 | 70.77 | 24 |
| 1999 | 70.42 | 25 |
| 1998 | 70.31 | 24 |
| 1997 | 69.89 | 25 |
| 1996 | 69.46 | 27 |
| 1995 | 69.65 | 27 |
| 1994 | 69.23 | 27 |
| 1993 | 69.32 | 27 |
| 1992 | 70.04 | 24 |
| 1991 | 70.58 | 23 |
| 1990 | 70.94 | 22 |