| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 80.46 | 44 |
| 2015 | 80.52 | 43 |
| 2014 | 80.56 | 42 |
| 2013 | 80.64 | 43 |
| 2012 | 80.69 | 44 |
| 2011 | 80.72 | 43 |
| 2010 | 80.66 | 44 |
| 2009 | 80.38 | 45 |
| 2008 | 80.63 | 46 |
| 2007 | 80.91 | 45 |
| 2006 | 81.27 | 43 |
| 2005 | 81.7 | 38 |
| 2004 | 82.14 | 34 |
| 2003 | 82.56 | 34 |
| 2002 | 82.98 | 29 |
| 2001 | 83.4 | 30 |
| 2000 | 83.85 | 25 |
| 1999 | 84.3 | 24 |
| 1998 | 84.77 | 19 |
| 1997 | 85.25 | 20 |
| 1996 | 85.73 | 21 |
| 1995 | 86.2 | 21 |
| 1994 | 86.61 | 21 |
| 1993 | 87 | 19 |
| 1992 | 87.39 | 18 |
| 1991 | 87.76 | 18 |
| 1990 | 88.13 | 18 |