| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 80.43 | 22 |
| 2015 | 80.46 | 22 |
| 2014 | 80.57 | 21 |
| 2013 | 80.74 | 22 |
| 2012 | 81.22 | 20 |
| 2011 | 81.01 | 19 |
| 2010 | 80.72 | 22 |
| 2009 | 81.52 | 19 |
| 2008 | 82.06 | 18 |
| 2007 | 81.85 | 17 |
| 2006 | 80.81 | 18 |
| 2005 | 81.42 | 17 |
| 2004 | 80.36 | 21 |
| 2003 | 80.29 | 23 |
| 2002 | 78.33 | 33 |
| 2001 | 80.39 | 25 |
| 2000 | 80.93 | 22 |
| 1999 | 82 | 20 |
| 1998 | 83.3 | 19 |
| 1997 | 84.4 | 17 |
| 1996 | 83.21 | 21 |
| 1995 | 88 | 5 |
| 1994 | 86.36 | 15 |
| 1993 | 85.72 | 17 |
| 1992 | 84.94 | 16 |
| 1991 | 86.37 | 14 |