| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 75.49 | 48 |
| 2015 | 75.48 | 48 |
| 2014 | 75.48 | 46 |
| 2013 | 75.48 | 47 |
| 2012 | 75.46 | 46 |
| 2011 | 75.55 | 44 |
| 2010 | 75.43 | 44 |
| 2009 | 75.55 | 43 |
| 2008 | 75.6 | 44 |
| 2007 | 75.63 | 46 |
| 2006 | 75.7 | 45 |
| 2005 | 75.67 | 46 |
| 2004 | 75.45 | 46 |
| 2003 | 75.7 | 46 |
| 2002 | 75.81 | 44 |
| 2001 | 75.84 | 50 |
| 2000 | 76.03 | 45 |
| 1999 | 76.09 | 45 |
| 1998 | 76.08 | 48 |
| 1997 | 76.18 | 51 |
| 1996 | 76.3 | 51 |
| 1995 | 76.41 | 51 |
| 1994 | 76.45 | 52 |
| 1993 | 76.63 | 53 |
| 1992 | 77.03 | 53 |
| 1991 | 76.96 | 55 |