| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 83.59 | 25 |
| 2015 | 83.65 | 23 |
| 2014 | 83.69 | 23 |
| 2013 | 83.76 | 21 |
| 2012 | 83.84 | 22 |
| 2011 | 83.93 | 22 |
| 2010 | 84.01 | 22 |
| 2009 | 84.12 | 22 |
| 2008 | 84.2 | 21 |
| 2007 | 84.26 | 19 |
| 2006 | 84.29 | 21 |
| 2005 | 84.29 | 22 |
| 2004 | 84.26 | 22 |
| 2003 | 84.21 | 21 |
| 2002 | 84.16 | 23 |
| 2001 | 84.11 | 24 |
| 2000 | 84.06 | 23 |
| 1999 | 84.37 | 22 |
| 1998 | 84.33 | 22 |
| 1997 | 84.29 | 25 |
| 1996 | 84.24 | 27 |
| 1995 | 84.19 | 30 |
| 1994 | 84.22 | 34 |
| 1993 | 84.23 | 34 |
| 1992 | 84.24 | 37 |
| 1991 | 84.25 | 37 |
| 1990 | 84.24 | 38 |