| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 77.44 | 5 |
| 2015 | 77.49 | 5 |
| 2014 | 77.51 | 5 |
| 2013 | 77.33 | 5 |
| 2012 | 77.96 | 5 |
| 2011 | 77.44 | 7 |
| 2010 | 77.96 | 7 |
| 2009 | 78.37 | 6 |
| 2008 | 78.18 | 7 |
| 2007 | 77.64 | 5 |
| 2006 | 77.86 | 5 |
| 2005 | 78.06 | 6 |
| 2004 | 78.99 | 6 |
| 2003 | 78.44 | 5 |
| 2002 | 78.92 | 4 |
| 2001 | 78.47 | 6 |
| 2000 | 79.96 | 4 |
| 1999 | 80.3 | 5 |
| 1998 | 79.41 | 5 |
| 1997 | 79.1 | 6 |
| 1996 | 78.95 | 6 |
| 1995 | 80.45 | 5 |
| 1994 | 79.42 | 6 |
| 1993 | 78.49 | 6 |
| 1992 | 77.73 | 7 |
| 1991 | 77.67 | 7 |