| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 68.31 | 54 |
| 2015 | 68.36 | 53 |
| 2014 | 68.4 | 51 |
| 2013 | 68.31 | 50 |
| 2012 | 68.28 | 49 |
| 2011 | 68.23 | 48 |
| 2010 | 68.17 | 50 |
| 2009 | 67.99 | 51 |
| 2008 | 67.8 | 53 |
| 2007 | 68.05 | 52 |
| 2006 | 68.55 | 49 |
| 2005 | 68.98 | 48 |
| 2004 | 69.41 | 47 |
| 2003 | 69.61 | 44 |
| 2002 | 69.63 | 44 |
| 2001 | 69.92 | 43 |
| 2000 | 69.94 | 43 |
| 1999 | 69.93 | 43 |
| 1998 | 69.93 | 40 |
| 1997 | 70.03 | 42 |
| 1996 | 70.15 | 42 |
| 1995 | 70.35 | 42 |
| 1994 | 70.51 | 41 |
| 1993 | 70.54 | 41 |
| 1992 | 69.78 | 42 |
| 1991 | 69.54 | 43 |
| 1990 | 69.49 | 44 |