| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 78.06 | 21 |
| 2015 | 78 | 21 |
| 2014 | 77.96 | 22 |
| 2013 | 77.94 | 22 |
| 2012 | 77.33 | 22 |
| 2011 | 77.35 | 21 |
| 2010 | 77.35 | 22 |
| 2009 | 77.4 | 22 |
| 2008 | 77.47 | 22 |
| 2007 | 77.48 | 22 |
| 2006 | 77.56 | 22 |
| 2005 | 77.64 | 22 |
| 2004 | 77.66 | 21 |
| 2003 | 77.76 | 19 |
| 2002 | 77.7 | 19 |
| 2001 | 77.77 | 19 |
| 2000 | 77.85 | 18 |
| 1999 | 77.82 | 18 |
| 1998 | 77.88 | 19 |
| 1997 | 77.97 | 18 |
| 1996 | 78.06 | 19 |
| 1995 | 78.02 | 20 |
| 1994 | 78.11 | 20 |
| 1993 | 78.18 | 20 |
| 1992 | 78.18 | 20 |
| 1991 | 78.09 | 21 |
| 1990 | 78.09 | 21 |