| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 84.61 | 2 |
| 2015 | 84.64 | 2 |
| 2014 | 84.62 | 2 |
| 2013 | 84.47 | 2 |
| 2012 | 84.3 | 2 |
| 2011 | 84.13 | 3 |
| 2010 | 83.98 | 4 |
| 2009 | 83.86 | 6 |
| 2008 | 83.8 | 6 |
| 2007 | 83.8 | 5 |
| 2006 | 83.87 | 5 |
| 2005 | 84 | 5 |
| 2004 | 84.13 | 5 |
| 2003 | 84.34 | 4 |
| 2002 | 84.56 | 4 |
| 2001 | 84.82 | 4 |
| 2000 | 85.06 | 4 |
| 1999 | 85.37 | 4 |
| 1998 | 85.63 | 4 |
| 1997 | 86.5 | 3 |
| 1996 | 87.29 | 1 |
| 1995 | 88.02 | 1 |
| 1994 | 88.69 | 1 |
| 1993 | 89.29 | 1 |
| 1992 | 89.85 | 1 |
| 1991 | 90.35 | 1 |
| 1990 | 90.79 | 1 |